diff --git a/src/globals.h b/src/globals.h
index 47b689360..350502553 100644
--- a/src/globals.h
+++ b/src/globals.h
@@ -37,7 +37,11 @@ typedef unsigned long mword_t;
 #define __noinline __attribute__((noinline))
 #define __used __attribute__((used))
 #ifndef __attribute_always_inline__
-# define __attribute_always_inline__ __attribute__((always_inline))
+# ifdef JERRY_NDEBUG
+#  define __attribute_always_inline__ __attribute__((always_inline))
+# else /* !JERRY_NDEBUG */
+#  define __attribute_always_inline__
+# endif /* !JERRY_NDEBUG */
 #endif /* !__attribute_always_inline__ */
 #ifndef __attribute_const__
 # define __attribute_const__ __attribute__((const))
diff --git a/src/libcoreint/interpreter.c b/src/libcoreint/interpreter.c
index 3107289e6..bb7a5619d 100644
--- a/src/libcoreint/interpreter.c
+++ b/src/libcoreint/interpreter.c
@@ -367,9 +367,11 @@ run_int (void)
 
   ecma_init ();
 
-  ecma_object_t *glob_obj_p = ecma_builtin_get (ECMA_BUILTIN_ID_GLOBAL);
+  ecma_object_ptr_t glob_obj_p;
+  ecma_builtin_get (glob_obj_p, ECMA_BUILTIN_ID_GLOBAL);
 
-  ecma_object_t *lex_env_p = ecma_op_create_global_environment (glob_obj_p);
+  ecma_object_ptr_t lex_env_p;
+  ecma_op_create_global_environment (lex_env_p, glob_obj_p);
   ecma_value_t this_binding_value (glob_obj_p);
 
   ecma_completion_value_t run_completion;
@@ -452,7 +454,7 @@ void
 run_int_from_pos (ecma_completion_value_t &completion, /**< out: completion value */
                   opcode_counter_t start_pos, /**< position to start interpretation at */
                   const ecma_value_t& this_binding_value, /**< value of 'this' binding */
-                  ecma_object_t *lex_env_p, /**< starting lexical environment */
+                  const ecma_object_ptr_t& lex_env_p, /**< starting lexical environment */
                   bool is_strict, /**< is execution mode strict? */
                   bool is_eval_code) /**< is current code executed with eval? */
 {
@@ -470,7 +472,7 @@ run_int_from_pos (ecma_completion_value_t &completion, /**< out: completion valu
   int_data_t int_data;
   int_data.pos = (opcode_counter_t) (start_pos + 1);
   int_data.this_binding_p = &this_binding_value;
-  int_data.lex_env_p = lex_env_p;
+  int_data.lex_env_p = &lex_env_p;
   int_data.is_strict = is_strict;
   int_data.is_eval_code = is_eval_code;
   int_data.min_reg_num = min_reg_num;
diff --git a/src/libcoreint/interpreter.h b/src/libcoreint/interpreter.h
index 17228c6b2..0b732faa5 100644
--- a/src/libcoreint/interpreter.h
+++ b/src/libcoreint/interpreter.h
@@ -28,7 +28,7 @@ void run_int_loop (ecma_completion_value_t &ret_value,
 void run_int_from_pos (ecma_completion_value_t &ret_value,
                        opcode_counter_t start_pos,
                        const ecma_value_t& this_binding_value,
-                       ecma_object_t *lex_env_p,
+                       const ecma_object_ptr_t& lex_env_p,
                        bool is_strict,
                        bool is_eval_code);
 
diff --git a/src/libcoreint/opcodes-ecma-relational.c b/src/libcoreint/opcodes-ecma-relational.c
index 2917be7d2..18238e19b 100644
--- a/src/libcoreint/opcodes-ecma-relational.c
+++ b/src/libcoreint/opcodes-ecma-relational.c
@@ -224,11 +224,14 @@ opfunc_instanceof (ecma_completion_value_t &ret_value, /**< out: completion valu
 
   if (!ecma_is_value_object (right_value))
   {
-    ecma_make_throw_obj_completion_value (ret_value, ecma_new_standard_error (ECMA_ERROR_TYPE));
+    ecma_object_ptr_t exception_obj_p;
+    ecma_new_standard_error (exception_obj_p, ECMA_ERROR_TYPE);
+    ecma_make_throw_obj_completion_value (ret_value, exception_obj_p);
   }
   else
   {
-    ecma_object_t *right_value_obj_p = ecma_get_object_from_value (right_value);
+    ecma_object_ptr_t right_value_obj_p;
+    ecma_get_object_from_value (right_value_obj_p, right_value);
 
     ECMA_TRY_CATCH (ret_value, ecma_op_object_has_instance, is_instance_of, right_value_obj_p, left_value);
 
@@ -265,7 +268,9 @@ opfunc_in (ecma_completion_value_t &ret_value, /**< out: completion value */
 
   if (!ecma_is_value_object (right_value))
   {
-    ecma_make_throw_obj_completion_value (ret_value, ecma_new_standard_error (ECMA_ERROR_TYPE));
+    ecma_object_ptr_t exception_obj_p;
+    ecma_new_standard_error (exception_obj_p, ECMA_ERROR_TYPE);
+    ecma_make_throw_obj_completion_value (ret_value, exception_obj_p);
   }
   else
   {
@@ -273,7 +278,8 @@ opfunc_in (ecma_completion_value_t &ret_value, /**< out: completion value */
 
     ecma_simple_value_t is_in = ECMA_SIMPLE_VALUE_UNDEFINED;
     ecma_string_t *left_value_prop_name_p = ecma_get_string_from_value (str_left_value);
-    ecma_object_t *right_value_obj_p = ecma_get_object_from_value (right_value);
+    ecma_object_ptr_t right_value_obj_p;
+    ecma_get_object_from_value (right_value_obj_p, right_value);
 
     if (ecma_op_object_get_property (right_value_obj_p, left_value_prop_name_p) != NULL)
     {
diff --git a/src/libcoreint/opcodes-ecma-try-catch-finally.c b/src/libcoreint/opcodes-ecma-try-catch-finally.c
index 4147e78d5..57e791bf3 100644
--- a/src/libcoreint/opcodes-ecma-try-catch-finally.c
+++ b/src/libcoreint/opcodes-ecma-try-catch-finally.c
@@ -70,8 +70,9 @@ opfunc_try_block (ecma_completion_value_t &try_completion, /**< out: completion
 
       ecma_string_t *catch_exc_var_name_str_p = ecma_new_ecma_string_from_lit_index (catch_exc_val_var_name_lit_idx);
 
-      ecma_object_t *old_env_p = int_data->lex_env_p;
-      ecma_object_t *catch_env_p = ecma_create_decl_lex_env (old_env_p);
+      const ecma_object_ptr_t* old_env_p = int_data->lex_env_p;
+      ecma_object_ptr_t catch_env_p;
+      ecma_create_decl_lex_env (catch_env_p, *old_env_p);
 
       ecma_completion_value_t completion;
       ecma_op_create_mutable_binding (completion,
@@ -92,7 +93,7 @@ opfunc_try_block (ecma_completion_value_t &try_completion, /**< out: completion
 
       ecma_deref_ecma_string (catch_exc_var_name_str_p);
 
-      int_data->lex_env_p = catch_env_p;
+      int_data->lex_env_p = &catch_env_p;
 
       ecma_free_completion_value (try_completion);
       run_int_loop (try_completion, int_data);
diff --git a/src/libcoreint/opcodes-helpers-variables.c b/src/libcoreint/opcodes-helpers-variables.c
index 77ecd4676..e7d5c2a8d 100644
--- a/src/libcoreint/opcodes-helpers-variables.c
+++ b/src/libcoreint/opcodes-helpers-variables.c
@@ -22,8 +22,8 @@
  * but has no ECMA-defined name.
  */
 static void
-do_strict_eval_arguments_check (ecma_object_t *ref_base_lex_env_p, /**< base of ECMA-reference
-                                                                        (lexical environment) */
+do_strict_eval_arguments_check (const ecma_object_ptr_t &ref_base_lex_env_p, /**< base of ECMA-reference
+                                                                                  (lexical environment) */
                                 ecma_string_t *var_name_string_p, /**< variable name */
                                 bool is_strict) /**< flag indicating strict mode */
 {
@@ -31,7 +31,7 @@ do_strict_eval_arguments_check (ecma_object_t *ref_base_lex_env_p, /**< base of
 
   if (is_strict)
   {
-    if (ref_base_lex_env_p != NULL)
+    if (ref_base_lex_env_p.is_not_null ())
     {
       JERRY_ASSERT (ecma_is_lexical_environment (ref_base_lex_env_p));
 
@@ -99,8 +99,8 @@ get_variable_value (ecma_completion_value_t &ret_value, /**< out: completion val
     JERRY_ASSERT (lit_id != INVALID_LITERAL);
     ecma_new_ecma_string_on_stack_from_lit_index (&var_name_string, lit_id);
 
-    ecma_object_t *ref_base_lex_env_p = ecma_op_resolve_reference_base (int_data->lex_env_p,
-                                                                        &var_name_string);
+    ecma_object_ptr_t ref_base_lex_env_p;
+    ecma_op_resolve_reference_base (ref_base_lex_env_p, *int_data->lex_env_p, &var_name_string);
 
     if (do_eval_or_arguments_check)
     {
@@ -169,8 +169,8 @@ set_variable_value (ecma_completion_value_t &ret_value, /**< out: completion val
     JERRY_ASSERT (lit_id != INVALID_LITERAL);
     ecma_new_ecma_string_on_stack_from_lit_index (&var_name_string, lit_id);
 
-    ecma_object_t *ref_base_lex_env_p = ecma_op_resolve_reference_base (int_data->lex_env_p,
-                                                                        &var_name_string);
+    ecma_object_ptr_t ref_base_lex_env_p;
+    ecma_op_resolve_reference_base (ref_base_lex_env_p, *int_data->lex_env_p, &var_name_string);
 
 #ifndef JERRY_NDEBUG
     do_strict_eval_arguments_check (ref_base_lex_env_p,
diff --git a/src/libcoreint/opcodes.c b/src/libcoreint/opcodes.c
index ac4ff40e6..81fdf1a3a 100644
--- a/src/libcoreint/opcodes.c
+++ b/src/libcoreint/opcodes.c
@@ -383,13 +383,13 @@ opfunc_var_decl (ecma_completion_value_t &ret_value, /**< out: completion value
 
   ecma_string_t *var_name_string_p = ecma_new_ecma_string_from_lit_index (lit_id);
 
-  if (!ecma_op_has_binding (int_data->lex_env_p, var_name_string_p))
+  if (!ecma_op_has_binding (*int_data->lex_env_p, var_name_string_p))
   {
     const bool is_configurable_bindings = int_data->is_eval_code;
 
     ecma_completion_value_t completion;
     ecma_op_create_mutable_binding (completion,
-                                    int_data->lex_env_p,
+                                    *int_data->lex_env_p,
                                     var_name_string_p,
                                     is_configurable_bindings);
 
@@ -399,7 +399,7 @@ opfunc_var_decl (ecma_completion_value_t &ret_value, /**< out: completion value
      * any binding with specified name in current lexical environment
      * and CreateMutableBinding sets the created binding's value to undefined */
     ecma_op_get_binding_value (completion,
-                               int_data->lex_env_p,
+                               *int_data->lex_env_p,
                                var_name_string_p,
                                true);
     JERRY_ASSERT (ecma_is_completion_value_normal_simple_value (completion, ECMA_SIMPLE_VALUE_UNDEFINED));
@@ -445,7 +445,7 @@ function_declaration (ecma_completion_value_t &ret_value, /**< out: completion v
   ecma_string_t *function_name_string_p = ecma_new_ecma_string_from_lit_index (function_name_lit_id);
 
   ecma_op_function_declaration (ret_value,
-                                int_data->lex_env_p,
+                                *int_data->lex_env_p,
                                 function_name_string_p,
                                 int_data->pos,
                                 args_names,
@@ -537,11 +537,11 @@ opfunc_func_expr_n (ecma_completion_value_t &ret_value, /**< out: completion val
     int_data->pos++;
   }
 
-  ecma_object_t *scope_p;
+  ecma_object_ptr_t scope_p;
   ecma_string_t *function_name_string_p = NULL;
   if (is_named_func_expr)
   {
-    scope_p = ecma_create_decl_lex_env (int_data->lex_env_p);
+    ecma_create_decl_lex_env (scope_p, *int_data->lex_env_p);
 
     const literal_index_t lit_id = deserialize_lit_id_by_uid (function_name_lit_idx, lit_oc);
     JERRY_ASSERT (lit_id != INVALID_LITERAL);
@@ -552,15 +552,17 @@ opfunc_func_expr_n (ecma_completion_value_t &ret_value, /**< out: completion val
   }
   else
   {
-    scope_p = int_data->lex_env_p;
+    scope_p = *int_data->lex_env_p;
     ecma_ref_object (scope_p);
   }
 
-  ecma_object_t *func_obj_p = ecma_op_create_function_object (params_names,
-                                                              params_number,
-                                                              scope_p,
-                                                              is_strict,
-                                                              int_data->pos);
+  ecma_object_ptr_t func_obj_p;
+  ecma_op_create_function_object (func_obj_p,
+                                  params_names,
+                                  params_number,
+                                  scope_p,
+                                  is_strict,
+                                  int_data->pos);
 
   set_variable_value (ret_value, int_data, lit_oc, dst_var_idx, ecma_value_t (func_obj_p));
 
@@ -654,7 +656,7 @@ opfunc_call_n (ecma_completion_value_t &ret_value, /**< out: completion value */
     }
     else
     {
-      ecma_op_implicit_this_value (get_this_completion_value, int_data->lex_env_p);
+      ecma_op_implicit_this_value (get_this_completion_value, *int_data->lex_env_p);
     }
     JERRY_ASSERT (ecma_is_completion_value_normal (get_this_completion_value));
 
@@ -663,11 +665,14 @@ opfunc_call_n (ecma_completion_value_t &ret_value, /**< out: completion value */
 
     if (!ecma_op_is_callable (func_value))
     {
-      ecma_make_throw_obj_completion_value (ret_value, ecma_new_standard_error (ECMA_ERROR_TYPE));
+      ecma_object_ptr_t exception_obj_p;
+      ecma_new_standard_error (exception_obj_p, ECMA_ERROR_TYPE);
+      ecma_make_throw_obj_completion_value (ret_value, exception_obj_p);
     }
     else
     {
-      ecma_object_t *func_obj_p = ecma_get_object_from_value (func_value);
+      ecma_object_ptr_t func_obj_p;
+      ecma_get_object_from_value (func_obj_p, func_value);
 
       ECMA_TRY_CATCH (ret_value,
                       ecma_op_function_call, call_ret_value, func_obj_p, this_value, arg_values, args_number);
@@ -736,11 +741,14 @@ opfunc_construct_n (ecma_completion_value_t &ret_value, /**< out: completion val
 
     if (!ecma_is_constructor (constructor_value))
     {
-      ecma_make_throw_obj_completion_value (ret_value, ecma_new_standard_error (ECMA_ERROR_TYPE));
+      ecma_object_ptr_t exception_obj_p;
+      ecma_new_standard_error (exception_obj_p, ECMA_ERROR_TYPE);
+      ecma_make_throw_obj_completion_value (ret_value, exception_obj_p);
     }
     else
     {
-      ecma_object_t *constructor_obj_p = ecma_get_object_from_value (constructor_value);
+      ecma_object_ptr_t constructor_obj_p;
+      ecma_get_object_from_value (constructor_obj_p, constructor_value);
 
       ECMA_TRY_CATCH (ret_value,
                       ecma_op_function_construct, construction_ret_value, constructor_obj_p, arg_values, args_number);
@@ -846,7 +854,8 @@ opfunc_obj_decl (ecma_completion_value_t &ret_value, /**< out: completion value
   int_data->pos++;
 
   ecma_completion_value_t completion;
-  ecma_object_t *obj_p = ecma_op_create_object_object_noarg ();
+  ecma_object_ptr_t obj_p;
+  ecma_op_create_object_object_noarg (obj_p);
 
   for (uint32_t prop_index = 0;
        prop_index < args_number;
@@ -927,7 +936,9 @@ opfunc_obj_decl (ecma_completion_value_t &ret_value, /**< out: completion value
         else if (type == OPCODE_META_TYPE_VARG_PROP_GETTER)
         {
           prop_desc.is_get_defined = true;
-          prop_desc.get_p = ecma_get_object_from_value (value_for_prop_desc);
+          ecma_object_ptr_t get_p;
+          ecma_get_object_from_value (get_p, value_for_prop_desc);
+          prop_desc.get_p = (ecma_object_t*) get_p;
 
           if (!is_previous_undefined
               && is_previous_data_desc)
@@ -938,7 +949,9 @@ opfunc_obj_decl (ecma_completion_value_t &ret_value, /**< out: completion value
         else
         {
           prop_desc.is_set_defined = true;
-          prop_desc.set_p = ecma_get_object_from_value (value_for_prop_desc);
+          ecma_object_ptr_t set_p;
+          ecma_get_object_from_value (set_p, value_for_prop_desc);
+          prop_desc.set_p = (ecma_object_t*) set_p;
 
           if (!is_previous_undefined
               && is_previous_data_desc)
@@ -1223,13 +1236,16 @@ opfunc_with (ecma_completion_value_t &ret_value, /**< out: completion value */
 
   int_data->pos++;
 
-  ecma_object_t *obj_p = ecma_get_object_from_value (obj_expr_value);
+  ecma_object_ptr_t obj_p;
+  ecma_get_object_from_value (obj_p, obj_expr_value);
 
-  ecma_object_t *old_env_p = int_data->lex_env_p;
-  ecma_object_t *new_env_p = ecma_create_object_lex_env (old_env_p,
-                                                         obj_p,
-                                                         true);
-  int_data->lex_env_p = new_env_p;
+  const ecma_object_ptr_t* old_env_p = int_data->lex_env_p;
+  ecma_object_ptr_t new_env_p;
+  ecma_create_object_lex_env (new_env_p,
+                              *old_env_p,
+                              obj_p,
+                              true);
+  int_data->lex_env_p = &new_env_p;
 
   ecma_completion_value_t evaluation_completion;
   run_int_loop (evaluation_completion, int_data);
@@ -1315,9 +1331,9 @@ evaluate_arg_for_typeof (ecma_completion_value_t &ret_value, /**< out: completio
 
     ecma_string_t *var_name_string_p = ecma_new_ecma_string_from_lit_index (lit_id);
 
-    ecma_object_t *ref_base_lex_env_p = ecma_op_resolve_reference_base (int_data->lex_env_p,
-                                                                        var_name_string_p);
-    if (ref_base_lex_env_p == NULL)
+    ecma_object_ptr_t ref_base_lex_env_p;
+    ecma_op_resolve_reference_base (ref_base_lex_env_p, *int_data->lex_env_p, var_name_string_p);
+    if (ref_base_lex_env_p.is_null ())
     {
       ecma_make_simple_completion_value (ret_value, ECMA_SIMPLE_VALUE_UNDEFINED);
     }
@@ -1422,7 +1438,7 @@ opfunc_delete_var (ecma_completion_value_t &ret_value, /**< out: completion valu
 
   ecma_reference_t ref;
   ecma_op_get_identifier_reference (ref,
-                                    int_data->lex_env_p,
+                                    *int_data->lex_env_p,
                                     name_string_p,
                                     int_data->is_strict);
 
@@ -1439,7 +1455,8 @@ opfunc_delete_var (ecma_completion_value_t &ret_value, /**< out: completion valu
     }
     else
     {
-      ecma_object_t *bindings_p = ecma_get_object_from_value (ref.base);
+      ecma_object_ptr_t bindings_p;
+      ecma_get_object_from_value (bindings_p, ref.base);
       JERRY_ASSERT (ecma_is_lexical_environment (bindings_p));
 
       ECMA_TRY_CATCH (ret_value, ecma_op_delete_binding, delete_completion, bindings_p,
@@ -1500,7 +1517,8 @@ opfunc_delete_prop (ecma_completion_value_t &ret_value, /**< out: completion val
     ECMA_TRY_CATCH (ret_value, ecma_op_to_object, obj_value, base_value);
 
     JERRY_ASSERT (ecma_is_value_object (obj_value));
-    ecma_object_t *obj_p = ecma_get_object_from_value (obj_value);
+    ecma_object_ptr_t obj_p;
+    ecma_get_object_from_value (obj_p, obj_value);
     JERRY_ASSERT (!ecma_is_lexical_environment (obj_p));
 
     ECMA_TRY_CATCH (ret_value, ecma_op_object_delete, delete_op_ret_val, obj_p, name_string_p, int_data->is_strict);
diff --git a/src/libcoreint/opcodes.h b/src/libcoreint/opcodes.h
index 1bc5a033e..0ae0182d4 100644
--- a/src/libcoreint/opcodes.h
+++ b/src/libcoreint/opcodes.h
@@ -78,7 +78,7 @@ typedef struct
 {
   opcode_counter_t pos; /**< current opcode to execute */
   const ecma_value_t* this_binding_p; /**< this binding for current context */
-  ecma_object_t *lex_env_p; /**< current lexical environment */
+  const ecma_object_ptr_t *lex_env_p; /**< current lexical environment */
   bool is_strict; /**< is current code execution mode strict? */
   bool is_eval_code; /**< is current code executed with eval */
   idx_t min_reg_num; /**< minimum idx used for register identification */
diff --git a/src/libecmabuiltins/ecma-builtin-array-prototype.inc.h b/src/libecmabuiltins/ecma-builtin-array-prototype.inc.h
index a5d219863..f50900539 100644
--- a/src/libecmabuiltins/ecma-builtin-array-prototype.inc.h
+++ b/src/libecmabuiltins/ecma-builtin-array-prototype.inc.h
@@ -1,4 +1,4 @@
-/* Copyright 2014 Samsung Electronics Co., Ltd.
+/* Copyright 2014-2015 Samsung Electronics Co., Ltd.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -41,7 +41,7 @@ OBJECT_ID (ECMA_BUILTIN_ID_ARRAY_PROTOTYPE)
 
 // 15.4.4.1
 OBJECT_VALUE (ECMA_MAGIC_STRING_CONSTRUCTOR,
-              ecma_builtin_get (ECMA_BUILTIN_ID_ARRAY),
+              ecma_builtin_get (object_out_p, ECMA_BUILTIN_ID_ARRAY),
               ECMA_PROPERTY_WRITABLE,
               ECMA_PROPERTY_NOT_ENUMERABLE,
               ECMA_PROPERTY_CONFIGURABLE)
diff --git a/src/libecmabuiltins/ecma-builtin-array.c b/src/libecmabuiltins/ecma-builtin-array.c
index 9515b6883..21b4edda6 100644
--- a/src/libecmabuiltins/ecma-builtin-array.c
+++ b/src/libecmabuiltins/ecma-builtin-array.c
@@ -62,7 +62,8 @@ ecma_builtin_array_object_is_array (ecma_completion_value_t &ret_value, /**< out
 
   if (ecma_is_value_object (arg))
   {
-    ecma_object_t *obj_p = ecma_get_object_from_value (arg);
+    ecma_object_ptr_t obj_p;
+    ecma_get_object_from_value (obj_p, arg);
 
     ecma_property_t *class_prop_p = ecma_get_internal_property (obj_p,
                                                                 ECMA_INTERNAL_PROPERTY_CLASS);
diff --git a/src/libecmabuiltins/ecma-builtin-array.inc.h b/src/libecmabuiltins/ecma-builtin-array.inc.h
index c5f28a2c4..a154cb41f 100644
--- a/src/libecmabuiltins/ecma-builtin-array.inc.h
+++ b/src/libecmabuiltins/ecma-builtin-array.inc.h
@@ -1,4 +1,4 @@
-/* Copyright 2014 Samsung Electronics Co., Ltd.
+/* Copyright 2014-2015 Samsung Electronics Co., Ltd.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -41,7 +41,7 @@ OBJECT_ID (ECMA_BUILTIN_ID_ARRAY)
 
 // 15.4.3.1
 OBJECT_VALUE (ECMA_MAGIC_STRING_PROTOTYPE,
-              ecma_builtin_get (ECMA_BUILTIN_ID_ARRAY_PROTOTYPE),
+              ecma_builtin_get (object_out_p, ECMA_BUILTIN_ID_ARRAY_PROTOTYPE),
               ECMA_PROPERTY_NOT_WRITABLE,
               ECMA_PROPERTY_NOT_ENUMERABLE,
               ECMA_PROPERTY_NOT_CONFIGURABLE)
diff --git a/src/libecmabuiltins/ecma-builtin-boolean-prototype.c b/src/libecmabuiltins/ecma-builtin-boolean-prototype.c
index b0707b8ca..cbfb460c8 100644
--- a/src/libecmabuiltins/ecma-builtin-boolean-prototype.c
+++ b/src/libecmabuiltins/ecma-builtin-boolean-prototype.c
@@ -97,7 +97,8 @@ ecma_builtin_boolean_prototype_object_value_of (ecma_completion_value_t &ret_val
   }
   else if (ecma_is_value_object (this_arg))
   {
-    ecma_object_t *obj_p = ecma_get_object_from_value (this_arg);
+    ecma_object_ptr_t obj_p;
+    ecma_get_object_from_value (obj_p, this_arg);
 
     ecma_property_t *class_prop_p = ecma_get_internal_property (obj_p, ECMA_INTERNAL_PROPERTY_CLASS);
 
@@ -119,7 +120,9 @@ ecma_builtin_boolean_prototype_object_value_of (ecma_completion_value_t &ret_val
     }
   }
 
-  ecma_make_throw_obj_completion_value (ret_value, ecma_new_standard_error (ECMA_ERROR_TYPE));
+  ecma_object_ptr_t exception_obj_p;
+  ecma_new_standard_error (exception_obj_p, ECMA_ERROR_TYPE);
+  ecma_make_throw_obj_completion_value (ret_value, exception_obj_p);
 } /* ecma_builtin_boolean_prototype_object_value_of */
 
 /**
diff --git a/src/libecmabuiltins/ecma-builtin-boolean-prototype.inc.h b/src/libecmabuiltins/ecma-builtin-boolean-prototype.inc.h
index c7aa7f0b9..918678cc3 100644
--- a/src/libecmabuiltins/ecma-builtin-boolean-prototype.inc.h
+++ b/src/libecmabuiltins/ecma-builtin-boolean-prototype.inc.h
@@ -1,4 +1,4 @@
-/* Copyright 2014 Samsung Electronics Co., Ltd.
+/* Copyright 2014-2015 Samsung Electronics Co., Ltd.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -37,7 +37,7 @@ OBJECT_ID (ECMA_BUILTIN_ID_BOOLEAN_PROTOTYPE)
 
 // 15.6.4.1
 OBJECT_VALUE (ECMA_MAGIC_STRING_CONSTRUCTOR,
-              ecma_builtin_get (ECMA_BUILTIN_ID_BOOLEAN),
+              ecma_builtin_get (object_out_p, ECMA_BUILTIN_ID_BOOLEAN),
               ECMA_PROPERTY_WRITABLE,
               ECMA_PROPERTY_NOT_ENUMERABLE,
               ECMA_PROPERTY_CONFIGURABLE)
diff --git a/src/libecmabuiltins/ecma-builtin-boolean.inc.h b/src/libecmabuiltins/ecma-builtin-boolean.inc.h
index 46905a088..e76c74627 100644
--- a/src/libecmabuiltins/ecma-builtin-boolean.inc.h
+++ b/src/libecmabuiltins/ecma-builtin-boolean.inc.h
@@ -1,4 +1,4 @@
-/* Copyright 2014 Samsung Electronics Co., Ltd.
+/* Copyright 2014-2015 Samsung Electronics Co., Ltd.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -41,7 +41,7 @@ OBJECT_ID (ECMA_BUILTIN_ID_BOOLEAN)
 
 // 15.6.3.1
 OBJECT_VALUE (ECMA_MAGIC_STRING_PROTOTYPE,
-              ecma_builtin_get (ECMA_BUILTIN_ID_BOOLEAN_PROTOTYPE),
+              ecma_builtin_get (object_out_p, ECMA_BUILTIN_ID_BOOLEAN_PROTOTYPE),
               ECMA_PROPERTY_NOT_WRITABLE,
               ECMA_PROPERTY_NOT_ENUMERABLE,
               ECMA_PROPERTY_NOT_CONFIGURABLE)
diff --git a/src/libecmabuiltins/ecma-builtin-compact-profile-error.c b/src/libecmabuiltins/ecma-builtin-compact-profile-error.c
index 6d4b2c06e..8f32332ed 100644
--- a/src/libecmabuiltins/ecma-builtin-compact-profile-error.c
+++ b/src/libecmabuiltins/ecma-builtin-compact-profile-error.c
@@ -55,7 +55,9 @@ ecma_builtin_compact_profile_error_dispatch_call (ecma_completion_value_t &ret_v
 {
   JERRY_ASSERT (arguments_list_len == 0 || arguments_list_p != NULL);
 
-  ecma_make_throw_obj_completion_value (ret_value, ecma_builtin_get (ECMA_BUILTIN_ID_COMPACT_PROFILE_ERROR));
+  ecma_object_ptr_t cp_error_obj_p;
+  ecma_builtin_get (cp_error_obj_p, ECMA_BUILTIN_ID_COMPACT_PROFILE_ERROR);
+  ecma_make_throw_obj_completion_value (ret_value, cp_error_obj_p);
 } /* ecma_builtin_compact_profile_error_dispatch_call */
 
 /**
@@ -70,7 +72,9 @@ ecma_builtin_compact_profile_error_dispatch_construct (ecma_completion_value_t &
 {
   JERRY_ASSERT (arguments_list_len == 0 || arguments_list_p != NULL);
 
-  ecma_make_throw_obj_completion_value (ret_value, ecma_builtin_get (ECMA_BUILTIN_ID_COMPACT_PROFILE_ERROR));
+  ecma_object_ptr_t cp_error_obj_p;
+  ecma_builtin_get (cp_error_obj_p, ECMA_BUILTIN_ID_COMPACT_PROFILE_ERROR);
+  ecma_make_throw_obj_completion_value (ret_value, cp_error_obj_p);
 } /* ecma_builtin_compact_profile_error_dispatch_construct */
 
 /**
diff --git a/src/libecmabuiltins/ecma-builtin-error-prototype.c b/src/libecmabuiltins/ecma-builtin-error-prototype.c
index 6128d27f9..9f6ff2f8a 100644
--- a/src/libecmabuiltins/ecma-builtin-error-prototype.c
+++ b/src/libecmabuiltins/ecma-builtin-error-prototype.c
@@ -60,11 +60,14 @@ ecma_builtin_error_prototype_object_to_string (ecma_completion_value_t &ret_valu
   // 2.
   if (!ecma_is_value_object (this_arg))
   {
-    ecma_make_throw_obj_completion_value (ret_value, ecma_new_standard_error (ECMA_ERROR_TYPE));
+    ecma_object_ptr_t exception_obj_p;
+    ecma_new_standard_error (exception_obj_p, ECMA_ERROR_TYPE);
+    ecma_make_throw_obj_completion_value (ret_value, exception_obj_p);
   }
   else
   {
-    ecma_object_t *obj_p = ecma_get_object_from_value (this_arg);
+    ecma_object_ptr_t obj_p;
+    ecma_get_object_from_value (obj_p, this_arg);
     ecma_string_t *name_magic_string_p = ecma_get_magic_string (ECMA_MAGIC_STRING_NAME);
 
     ECMA_TRY_CATCH (ret_value, ecma_op_object_get, name_get_ret_value, obj_p, name_magic_string_p);
diff --git a/src/libecmabuiltins/ecma-builtin-error-prototype.inc.h b/src/libecmabuiltins/ecma-builtin-error-prototype.inc.h
index 3ea467cd9..1eddf77aa 100644
--- a/src/libecmabuiltins/ecma-builtin-error-prototype.inc.h
+++ b/src/libecmabuiltins/ecma-builtin-error-prototype.inc.h
@@ -1,4 +1,4 @@
-/* Copyright 2014 Samsung Electronics Co., Ltd.
+/* Copyright 2014-2015 Samsung Electronics Co., Ltd.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -41,7 +41,7 @@ OBJECT_ID (ECMA_BUILTIN_ID_ERROR_PROTOTYPE)
 
 // 15.11.4.1
 OBJECT_VALUE (ECMA_MAGIC_STRING_CONSTRUCTOR,
-              ecma_builtin_get (ECMA_BUILTIN_ID_ERROR),
+              ecma_builtin_get (object_out_p, ECMA_BUILTIN_ID_ERROR),
               ECMA_PROPERTY_WRITABLE,
               ECMA_PROPERTY_NOT_ENUMERABLE,
               ECMA_PROPERTY_CONFIGURABLE)
diff --git a/src/libecmabuiltins/ecma-builtin-error.c b/src/libecmabuiltins/ecma-builtin-error.c
index 43a8524f7..bdc2bf14e 100644
--- a/src/libecmabuiltins/ecma-builtin-error.c
+++ b/src/libecmabuiltins/ecma-builtin-error.c
@@ -61,15 +61,16 @@ ecma_builtin_error_dispatch_call (ecma_completion_value_t &ret_value, /**< out:
     ECMA_TRY_CATCH (ret_value, ecma_op_to_string, msg_str_value, arguments_list_p[0]);
 
     ecma_string_t *message_string_p = ecma_get_string_from_value (msg_str_value);
-    ecma_object_t *new_error_object_p = ecma_new_standard_error_with_message (ECMA_ERROR_COMMON,
-                                                                              message_string_p);
+    ecma_object_ptr_t new_error_object_p;
+    ecma_new_standard_error_with_message (new_error_object_p, ECMA_ERROR_COMMON, message_string_p);
     ecma_make_normal_completion_value (ret_value, ecma_value_t (new_error_object_p));
 
     ECMA_FINALIZE (msg_str_value);
   }
   else
   {
-    ecma_object_t *new_error_object_p = ecma_new_standard_error (ECMA_ERROR_COMMON);
+    ecma_object_ptr_t new_error_object_p;
+    ecma_new_standard_error (new_error_object_p, ECMA_ERROR_COMMON);
 
     ecma_make_normal_completion_value (ret_value, ecma_value_t (new_error_object_p));
   }
diff --git a/src/libecmabuiltins/ecma-builtin-error.inc.h b/src/libecmabuiltins/ecma-builtin-error.inc.h
index 317ba86b7..75975b69b 100644
--- a/src/libecmabuiltins/ecma-builtin-error.inc.h
+++ b/src/libecmabuiltins/ecma-builtin-error.inc.h
@@ -1,4 +1,4 @@
-/* Copyright 2014 Samsung Electronics Co., Ltd.
+/* Copyright 2014-2015 Samsung Electronics Co., Ltd.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -51,7 +51,7 @@ NUMBER_VALUE (ECMA_MAGIC_STRING_LENGTH,
 
 // 15.7.3.1
 OBJECT_VALUE (ECMA_MAGIC_STRING_PROTOTYPE,
-              ecma_builtin_get (ECMA_BUILTIN_ID_ERROR_PROTOTYPE),
+              ecma_builtin_get (object_out_p, ECMA_BUILTIN_ID_ERROR_PROTOTYPE),
               ECMA_PROPERTY_NOT_WRITABLE,
               ECMA_PROPERTY_NOT_ENUMERABLE,
               ECMA_PROPERTY_NOT_CONFIGURABLE)
diff --git a/src/libecmabuiltins/ecma-builtin-evalerror-prototype.inc.h b/src/libecmabuiltins/ecma-builtin-evalerror-prototype.inc.h
index 0e99d38dd..e12734b07 100644
--- a/src/libecmabuiltins/ecma-builtin-evalerror-prototype.inc.h
+++ b/src/libecmabuiltins/ecma-builtin-evalerror-prototype.inc.h
@@ -1,4 +1,4 @@
-/* Copyright 2014 Samsung Electronics Co., Ltd.
+/* Copyright 2014-2015 Samsung Electronics Co., Ltd.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -37,7 +37,7 @@ OBJECT_ID (ECMA_BUILTIN_ID_EVAL_ERROR_PROTOTYPE)
 
 // 15.11.7.8
 OBJECT_VALUE (ECMA_MAGIC_STRING_CONSTRUCTOR,
-              ecma_builtin_get (ECMA_BUILTIN_ID_EVAL_ERROR),
+              ecma_builtin_get (object_out_p, ECMA_BUILTIN_ID_EVAL_ERROR),
               ECMA_PROPERTY_WRITABLE,
               ECMA_PROPERTY_NOT_ENUMERABLE,
               ECMA_PROPERTY_CONFIGURABLE)
diff --git a/src/libecmabuiltins/ecma-builtin-evalerror.c b/src/libecmabuiltins/ecma-builtin-evalerror.c
index 294d918a6..8f1c6d8b4 100644
--- a/src/libecmabuiltins/ecma-builtin-evalerror.c
+++ b/src/libecmabuiltins/ecma-builtin-evalerror.c
@@ -61,15 +61,16 @@ ecma_builtin_eval_error_dispatch_call (ecma_completion_value_t &ret_value, /**<
     ECMA_TRY_CATCH (ret_value, ecma_op_to_string, msg_str_value, arguments_list_p[0]);
 
     ecma_string_t *message_string_p = ecma_get_string_from_value (msg_str_value);
-    ecma_object_t *new_error_object_p = ecma_new_standard_error_with_message (ECMA_ERROR_EVAL,
-                                                                              message_string_p);
+    ecma_object_ptr_t new_error_object_p;
+    ecma_new_standard_error_with_message (new_error_object_p, ECMA_ERROR_EVAL, message_string_p);
     ecma_make_normal_completion_value (ret_value, ecma_value_t (new_error_object_p));
 
     ECMA_FINALIZE (msg_str_value);
   }
   else
   {
-    ecma_object_t *new_error_object_p = ecma_new_standard_error (ECMA_ERROR_EVAL);
+    ecma_object_ptr_t new_error_object_p;
+    ecma_new_standard_error (new_error_object_p, ECMA_ERROR_EVAL);
 
     ecma_make_normal_completion_value (ret_value, ecma_value_t (new_error_object_p));
   }
diff --git a/src/libecmabuiltins/ecma-builtin-evalerror.inc.h b/src/libecmabuiltins/ecma-builtin-evalerror.inc.h
index ffa2866de..2950481c9 100644
--- a/src/libecmabuiltins/ecma-builtin-evalerror.inc.h
+++ b/src/libecmabuiltins/ecma-builtin-evalerror.inc.h
@@ -1,4 +1,4 @@
-/* Copyright 2014 Samsung Electronics Co., Ltd.
+/* Copyright 2014-2015 Samsung Electronics Co., Ltd.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -51,7 +51,7 @@ NUMBER_VALUE (ECMA_MAGIC_STRING_LENGTH,
 
 // 15.11.3.1
 OBJECT_VALUE (ECMA_MAGIC_STRING_PROTOTYPE,
-              ecma_builtin_get (ECMA_BUILTIN_ID_EVAL_ERROR_PROTOTYPE),
+              ecma_builtin_get (object_out_p, ECMA_BUILTIN_ID_EVAL_ERROR_PROTOTYPE),
               ECMA_PROPERTY_NOT_WRITABLE,
               ECMA_PROPERTY_NOT_ENUMERABLE,
               ECMA_PROPERTY_NOT_CONFIGURABLE)
diff --git a/src/libecmabuiltins/ecma-builtin-function-prototype.c b/src/libecmabuiltins/ecma-builtin-function-prototype.c
index ae7b95753..b9cc28d52 100644
--- a/src/libecmabuiltins/ecma-builtin-function-prototype.c
+++ b/src/libecmabuiltins/ecma-builtin-function-prototype.c
@@ -139,7 +139,9 @@ ecma_builtin_function_prototype_dispatch_construct (ecma_completion_value_t &ret
 {
   JERRY_ASSERT (arguments_list_len == 0 || arguments_list_p != NULL);
 
-  ecma_make_throw_obj_completion_value (ret_value, ecma_new_standard_error (ECMA_ERROR_TYPE));
+  ecma_object_ptr_t exception_obj_p;
+  ecma_new_standard_error (exception_obj_p, ECMA_ERROR_TYPE);
+  ecma_make_throw_obj_completion_value (ret_value, exception_obj_p);
 } /* ecma_builtin_function_prototype_dispatch_construct */
 
 /**
diff --git a/src/libecmabuiltins/ecma-builtin-function-prototype.inc.h b/src/libecmabuiltins/ecma-builtin-function-prototype.inc.h
index d13f89117..93b450ca3 100644
--- a/src/libecmabuiltins/ecma-builtin-function-prototype.inc.h
+++ b/src/libecmabuiltins/ecma-builtin-function-prototype.inc.h
@@ -1,4 +1,4 @@
-/* Copyright 2014 Samsung Electronics Co., Ltd.
+/* Copyright 2014-2015 Samsung Electronics Co., Ltd.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -41,7 +41,7 @@ OBJECT_ID (ECMA_BUILTIN_ID_FUNCTION_PROTOTYPE)
 
 // 15.3.4.1
 OBJECT_VALUE (ECMA_MAGIC_STRING_CONSTRUCTOR,
-              ecma_builtin_get (ECMA_BUILTIN_ID_FUNCTION),
+              ecma_builtin_get (object_out_p, ECMA_BUILTIN_ID_FUNCTION),
               ECMA_PROPERTY_WRITABLE,
               ECMA_PROPERTY_NOT_ENUMERABLE,
               ECMA_PROPERTY_CONFIGURABLE)
diff --git a/src/libecmabuiltins/ecma-builtin-function.inc.h b/src/libecmabuiltins/ecma-builtin-function.inc.h
index 81cd38b4f..2be88b9dc 100644
--- a/src/libecmabuiltins/ecma-builtin-function.inc.h
+++ b/src/libecmabuiltins/ecma-builtin-function.inc.h
@@ -1,4 +1,4 @@
-/* Copyright 2014 Samsung Electronics Co., Ltd.
+/* Copyright 2014-2015 Samsung Electronics Co., Ltd.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -41,7 +41,7 @@ OBJECT_ID (ECMA_BUILTIN_ID_FUNCTION)
 
 // 15.3.3.1
 OBJECT_VALUE (ECMA_MAGIC_STRING_PROTOTYPE,
-              ecma_builtin_get (ECMA_BUILTIN_ID_FUNCTION_PROTOTYPE),
+              ecma_builtin_get (object_out_p, ECMA_BUILTIN_ID_FUNCTION_PROTOTYPE),
               ECMA_PROPERTY_NOT_WRITABLE,
               ECMA_PROPERTY_NOT_ENUMERABLE,
               ECMA_PROPERTY_NOT_CONFIGURABLE)
diff --git a/src/libecmabuiltins/ecma-builtin-global.inc.h b/src/libecmabuiltins/ecma-builtin-global.inc.h
index 13f2f6a94..7e397b4dd 100644
--- a/src/libecmabuiltins/ecma-builtin-global.inc.h
+++ b/src/libecmabuiltins/ecma-builtin-global.inc.h
@@ -1,4 +1,4 @@
-/* Copyright 2014 Samsung Electronics Co., Ltd.
+/* Copyright 2014-2015 Samsung Electronics Co., Ltd.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -76,14 +76,14 @@ NUMBER_VALUE (ECMA_MAGIC_STRING_INFINITY_UL,
 
 // ECMA-262 v5, 15.1.4.1
 OBJECT_VALUE (ECMA_MAGIC_STRING_OBJECT_UL,
-              ecma_builtin_get (ECMA_BUILTIN_ID_OBJECT),
+              ecma_builtin_get (object_out_p, ECMA_BUILTIN_ID_OBJECT),
               ECMA_PROPERTY_WRITABLE,
               ECMA_PROPERTY_NOT_ENUMERABLE,
               ECMA_PROPERTY_CONFIGURABLE)
 
 // ECMA-262 v5, 15.1.4.2
 OBJECT_VALUE (ECMA_MAGIC_STRING_FUNCTION_UL,
-              ecma_builtin_get (ECMA_BUILTIN_ID_FUNCTION),
+              ecma_builtin_get (object_out_p, ECMA_BUILTIN_ID_FUNCTION),
               ECMA_PROPERTY_WRITABLE,
               ECMA_PROPERTY_NOT_ENUMERABLE,
               ECMA_PROPERTY_CONFIGURABLE)
@@ -91,7 +91,7 @@ OBJECT_VALUE (ECMA_MAGIC_STRING_FUNCTION_UL,
 // ECMA-262 v5, 15.1.4.3
 #ifndef CONFIG_ECMA_COMPACT_PROFILE_DISABLE_ARRAY_BUILTIN
 OBJECT_VALUE (ECMA_MAGIC_STRING_ARRAY_UL,
-              ecma_builtin_get (ECMA_BUILTIN_ID_ARRAY),
+              ecma_builtin_get (object_out_p, ECMA_BUILTIN_ID_ARRAY),
               ECMA_PROPERTY_WRITABLE,
               ECMA_PROPERTY_NOT_ENUMERABLE,
               ECMA_PROPERTY_CONFIGURABLE)
@@ -100,7 +100,7 @@ OBJECT_VALUE (ECMA_MAGIC_STRING_ARRAY_UL,
 #ifndef CONFIG_ECMA_COMPACT_PROFILE_DISABLE_STRING_BUILTIN
 // ECMA-262 v5, 15.1.4.4
 OBJECT_VALUE (ECMA_MAGIC_STRING_STRING_UL,
-              ecma_builtin_get (ECMA_BUILTIN_ID_STRING),
+              ecma_builtin_get (object_out_p, ECMA_BUILTIN_ID_STRING),
               ECMA_PROPERTY_WRITABLE,
               ECMA_PROPERTY_NOT_ENUMERABLE,
               ECMA_PROPERTY_CONFIGURABLE)
@@ -109,7 +109,7 @@ OBJECT_VALUE (ECMA_MAGIC_STRING_STRING_UL,
 #ifndef CONFIG_ECMA_COMPACT_PROFILE_DISABLE_BOOLEAN_BUILTIN
 // ECMA-262 v5, 15.1.4.5
 OBJECT_VALUE (ECMA_MAGIC_STRING_BOOLEAN_UL,
-              ecma_builtin_get (ECMA_BUILTIN_ID_BOOLEAN),
+              ecma_builtin_get (object_out_p, ECMA_BUILTIN_ID_BOOLEAN),
               ECMA_PROPERTY_WRITABLE,
               ECMA_PROPERTY_NOT_ENUMERABLE,
               ECMA_PROPERTY_CONFIGURABLE)
@@ -118,7 +118,7 @@ OBJECT_VALUE (ECMA_MAGIC_STRING_BOOLEAN_UL,
 #ifndef CONFIG_ECMA_COMPACT_PROFILE_DISABLE_NUMBER_BUILTIN
 // ECMA-262 v5, 15.1.4.6
 OBJECT_VALUE (ECMA_MAGIC_STRING_NUMBER_UL,
-              ecma_builtin_get (ECMA_BUILTIN_ID_NUMBER),
+              ecma_builtin_get (object_out_p, ECMA_BUILTIN_ID_NUMBER),
               ECMA_PROPERTY_WRITABLE,
               ECMA_PROPERTY_NOT_ENUMERABLE,
               ECMA_PROPERTY_CONFIGURABLE)
@@ -126,14 +126,14 @@ OBJECT_VALUE (ECMA_MAGIC_STRING_NUMBER_UL,
 
 // ECMA-262 v5, 15.1.4.7
 CP_UNIMPLEMENTED_VALUE (ECMA_MAGIC_STRING_DATE_UL,
-                        ecma_builtin_get (ECMA_BUILTIN_ID_DATE),
+                        ecma_builtin_get (object_out_p, ECMA_BUILTIN_ID_DATE),
                         ECMA_PROPERTY_WRITABLE,
                         ECMA_PROPERTY_NOT_ENUMERABLE,
                         ECMA_PROPERTY_CONFIGURABLE)
 
 // ECMA-262 v5, 15.1.4.8
 CP_UNIMPLEMENTED_VALUE (ECMA_MAGIC_STRING_REG_EXP_UL,
-                        ecma_builtin_get (ECMA_BUILTIN_ID_REGEXP),
+                        ecma_builtin_get (object_out_p, ECMA_BUILTIN_ID_REGEXP),
                         ECMA_PROPERTY_WRITABLE,
                         ECMA_PROPERTY_NOT_ENUMERABLE,
                         ECMA_PROPERTY_CONFIGURABLE)
@@ -141,49 +141,49 @@ CP_UNIMPLEMENTED_VALUE (ECMA_MAGIC_STRING_REG_EXP_UL,
 #ifndef CONFIG_ECMA_COMPACT_PROFILE_DISABLE_ERROR_BUILTINS
 // ECMA-262 v5, 15.1.4.9
 OBJECT_VALUE (ECMA_MAGIC_STRING_ERROR_UL,
-              ecma_builtin_get (ECMA_BUILTIN_ID_ERROR),
+              ecma_builtin_get (object_out_p, ECMA_BUILTIN_ID_ERROR),
               ECMA_PROPERTY_WRITABLE,
               ECMA_PROPERTY_NOT_ENUMERABLE,
               ECMA_PROPERTY_CONFIGURABLE)
 
 // ECMA-262 v5, 15.1.4.10
 OBJECT_VALUE (ECMA_MAGIC_STRING_EVAL_ERROR_UL,
-              ecma_builtin_get (ECMA_BUILTIN_ID_EVAL_ERROR),
+              ecma_builtin_get (object_out_p, ECMA_BUILTIN_ID_EVAL_ERROR),
               ECMA_PROPERTY_WRITABLE,
               ECMA_PROPERTY_NOT_ENUMERABLE,
               ECMA_PROPERTY_CONFIGURABLE)
 
 // ECMA-262 v5, 15.1.4.11
 OBJECT_VALUE (ECMA_MAGIC_STRING_RANGE_ERROR_UL,
-              ecma_builtin_get (ECMA_BUILTIN_ID_RANGE_ERROR),
+              ecma_builtin_get (object_out_p, ECMA_BUILTIN_ID_RANGE_ERROR),
               ECMA_PROPERTY_WRITABLE,
               ECMA_PROPERTY_NOT_ENUMERABLE,
               ECMA_PROPERTY_CONFIGURABLE)
 
 // ECMA-262 v5, 15.1.4.12
 OBJECT_VALUE (ECMA_MAGIC_STRING_REFERENCE_ERROR_UL,
-              ecma_builtin_get (ECMA_BUILTIN_ID_REFERENCE_ERROR),
+              ecma_builtin_get (object_out_p, ECMA_BUILTIN_ID_REFERENCE_ERROR),
               ECMA_PROPERTY_WRITABLE,
               ECMA_PROPERTY_NOT_ENUMERABLE,
               ECMA_PROPERTY_CONFIGURABLE)
 
 // ECMA-262 v5, 15.1.4.13
 OBJECT_VALUE (ECMA_MAGIC_STRING_SYNTAX_ERROR_UL,
-              ecma_builtin_get (ECMA_BUILTIN_ID_SYNTAX_ERROR),
+              ecma_builtin_get (object_out_p, ECMA_BUILTIN_ID_SYNTAX_ERROR),
               ECMA_PROPERTY_WRITABLE,
               ECMA_PROPERTY_NOT_ENUMERABLE,
               ECMA_PROPERTY_CONFIGURABLE)
 
 // ECMA-262 v5, 15.1.4.14
 OBJECT_VALUE (ECMA_MAGIC_STRING_TYPE_ERROR_UL,
-              ecma_builtin_get (ECMA_BUILTIN_ID_TYPE_ERROR),
+              ecma_builtin_get (object_out_p, ECMA_BUILTIN_ID_TYPE_ERROR),
               ECMA_PROPERTY_WRITABLE,
               ECMA_PROPERTY_NOT_ENUMERABLE,
               ECMA_PROPERTY_CONFIGURABLE)
 
 // ECMA-262 v5, 15.1.4.15
 OBJECT_VALUE (ECMA_MAGIC_STRING_URI_ERROR_UL,
-              ecma_builtin_get (ECMA_BUILTIN_ID_URI_ERROR),
+              ecma_builtin_get (object_out_p, ECMA_BUILTIN_ID_URI_ERROR),
               ECMA_PROPERTY_WRITABLE,
               ECMA_PROPERTY_NOT_ENUMERABLE,
               ECMA_PROPERTY_CONFIGURABLE)
@@ -192,7 +192,7 @@ OBJECT_VALUE (ECMA_MAGIC_STRING_URI_ERROR_UL,
 #ifndef CONFIG_ECMA_COMPACT_PROFILE_DISABLE_MATH_BUILTIN
 // ECMA-262 v5, 15.1.5.1
 OBJECT_VALUE (ECMA_MAGIC_STRING_MATH_UL,
-              ecma_builtin_get (ECMA_BUILTIN_ID_MATH),
+              ecma_builtin_get (object_out_p, ECMA_BUILTIN_ID_MATH),
               ECMA_PROPERTY_WRITABLE,
               ECMA_PROPERTY_NOT_ENUMERABLE,
               ECMA_PROPERTY_CONFIGURABLE)
@@ -200,14 +200,14 @@ OBJECT_VALUE (ECMA_MAGIC_STRING_MATH_UL,
 
 // ECMA-262 v5, 15.1.5.2
 CP_UNIMPLEMENTED_VALUE (ECMA_MAGIC_STRING_JSON_U,
-                        ecma_builtin_get (ECMA_BUILTIN_ID_JSON),
+                        ecma_builtin_get (object_out_p, ECMA_BUILTIN_ID_JSON),
                         ECMA_PROPERTY_WRITABLE,
                         ECMA_PROPERTY_NOT_ENUMERABLE,
                         ECMA_PROPERTY_CONFIGURABLE)
 
 #ifdef CONFIG_ECMA_COMPACT_PROFILE
 OBJECT_VALUE (ECMA_MAGIC_STRING_COMPACT_PROFILE_ERROR_UL,
-              ecma_builtin_get (ECMA_BUILTIN_ID_COMPACT_PROFILE_ERROR),
+              ecma_builtin_get (object_out_p, ECMA_BUILTIN_ID_COMPACT_PROFILE_ERROR),
               ECMA_PROPERTY_NOT_WRITABLE,
               ECMA_PROPERTY_NOT_ENUMERABLE,
               ECMA_PROPERTY_NOT_CONFIGURABLE)
diff --git a/src/libecmabuiltins/ecma-builtin-internal-routines-template.inc.h b/src/libecmabuiltins/ecma-builtin-internal-routines-template.inc.h
index 8b8fc8dbb..a79ea4704 100644
--- a/src/libecmabuiltins/ecma-builtin-internal-routines-template.inc.h
+++ b/src/libecmabuiltins/ecma-builtin-internal-routines-template.inc.h
@@ -99,7 +99,7 @@ SORT_PROPERTY_NAMES_ROUTINE_NAME (BUILTIN_UNDERSCORED_ID) (void)
  *         NULL - otherwise.
  */
 ecma_property_t*
-TRY_TO_INSTANTIATE_PROPERTY_ROUTINE_NAME (BUILTIN_UNDERSCORED_ID) (ecma_object_t *obj_p, /**< object */
+TRY_TO_INSTANTIATE_PROPERTY_ROUTINE_NAME (BUILTIN_UNDERSCORED_ID) (const ecma_object_ptr_t& obj_p, /**< object */
                                                                    ecma_string_t *prop_name_p) /**< property's name */
 {
 #define OBJECT_ID(builtin_id) const ecma_builtin_id_t builtin_object_id = builtin_id;
@@ -170,9 +170,11 @@ TRY_TO_INSTANTIATE_PROPERTY_ROUTINE_NAME (BUILTIN_UNDERSCORED_ID) (ecma_object_t
   {
 #define ROUTINE(name, c_function_name, args_number, length_prop_value) case name: \
     { \
-      ecma_object_t *func_obj_p = ecma_builtin_make_function_object_for_routine (builtin_object_id, \
-                                                                                 id, \
-                                                                                 length_prop_value); \
+      ecma_object_ptr_t func_obj_p; \
+      ecma_builtin_make_function_object_for_routine (func_obj_p, \
+                                                     builtin_object_id, \
+                                                     id, \
+                                                     length_prop_value); \
       \
       writable = ECMA_PROPERTY_WRITABLE; \
       enumerable = ECMA_PROPERTY_NOT_ENUMERABLE; \
@@ -184,7 +186,9 @@ TRY_TO_INSTANTIATE_PROPERTY_ROUTINE_NAME (BUILTIN_UNDERSCORED_ID) (ecma_object_t
     }
 #define OBJECT_VALUE(name, obj_getter, prop_writable, prop_enumerable, prop_configurable) case name: \
     { \
-      value = obj_getter; \
+      ecma_object_ptr_t object_out_p; \
+      obj_getter; \
+      value = object_out_p; \
       writable = prop_writable; \
       enumerable = prop_enumerable; \
       configurable = prop_configurable; \
@@ -229,7 +233,8 @@ TRY_TO_INSTANTIATE_PROPERTY_ROUTINE_NAME (BUILTIN_UNDERSCORED_ID) (ecma_object_t
 #define CP_UNIMPLEMENTED_VALUE(name, value, prop_writable, prop_enumerable, prop_configurable) case name: \
     { \
       /* The object throws CompactProfileError upon invocation */ \
-      ecma_object_t *get_set_p = ecma_builtin_get (ECMA_BUILTIN_ID_COMPACT_PROFILE_ERROR); \
+      ecma_object_ptr_t get_set_p; \
+      ecma_builtin_get (get_set_p, ECMA_BUILTIN_ID_COMPACT_PROFILE_ERROR); \
       ecma_property_t *compact_profile_thrower_property_p = ecma_create_named_accessor_property (obj_p, \
                                                                                                  prop_name_p, \
                                                                                                  get_set_p, \
diff --git a/src/libecmabuiltins/ecma-builtin-number-prototype.c b/src/libecmabuiltins/ecma-builtin-number-prototype.c
index 4433cd26d..a1ccd6742 100644
--- a/src/libecmabuiltins/ecma-builtin-number-prototype.c
+++ b/src/libecmabuiltins/ecma-builtin-number-prototype.c
@@ -69,7 +69,8 @@ ecma_builtin_number_prototype_object_to_string (ecma_completion_value_t &ret_val
   }
   else if (ecma_is_value_object (this_arg))
   {
-    ecma_object_t *obj_p = ecma_get_object_from_value (this_arg);
+    ecma_object_ptr_t obj_p;
+    ecma_get_object_from_value (obj_p, this_arg);
 
     ecma_property_t *class_prop_p = ecma_get_internal_property (obj_p, ECMA_INTERNAL_PROPERTY_CLASS);
 
@@ -84,13 +85,17 @@ ecma_builtin_number_prototype_object_to_string (ecma_completion_value_t &ret_val
     }
     else
     {
-      ecma_make_throw_obj_completion_value (ret_value, ecma_new_standard_error (ECMA_ERROR_TYPE));
+      ecma_object_ptr_t exception_obj_p;
+      ecma_new_standard_error (exception_obj_p, ECMA_ERROR_TYPE);
+      ecma_make_throw_obj_completion_value (ret_value, exception_obj_p);
       return;
     }
   }
   else
   {
-    ecma_make_throw_obj_completion_value (ret_value, ecma_new_standard_error (ECMA_ERROR_TYPE));
+    ecma_object_ptr_t exception_obj_p;
+    ecma_new_standard_error (exception_obj_p, ECMA_ERROR_TYPE);
+    ecma_make_throw_obj_completion_value (ret_value, exception_obj_p);
     return;
   }
 
@@ -145,7 +150,8 @@ ecma_builtin_number_prototype_object_value_of (ecma_completion_value_t &ret_valu
   }
   else if (ecma_is_value_object (this_arg))
   {
-    ecma_object_t *obj_p = ecma_get_object_from_value (this_arg);
+    ecma_object_ptr_t obj_p;
+    ecma_get_object_from_value (obj_p, this_arg);
 
     ecma_property_t *class_prop_p = ecma_get_internal_property (obj_p, ECMA_INTERNAL_PROPERTY_CLASS);
 
@@ -165,7 +171,9 @@ ecma_builtin_number_prototype_object_value_of (ecma_completion_value_t &ret_valu
     }
   }
 
-  ecma_make_throw_obj_completion_value (ret_value, ecma_new_standard_error (ECMA_ERROR_TYPE));
+  ecma_object_ptr_t exception_obj_p;
+  ecma_new_standard_error (exception_obj_p, ECMA_ERROR_TYPE);
+  ecma_make_throw_obj_completion_value (ret_value, exception_obj_p);
 } /* ecma_builtin_number_prototype_object_value_of */
 
 /**
diff --git a/src/libecmabuiltins/ecma-builtin-number-prototype.inc.h b/src/libecmabuiltins/ecma-builtin-number-prototype.inc.h
index 471f04747..eb16f081d 100644
--- a/src/libecmabuiltins/ecma-builtin-number-prototype.inc.h
+++ b/src/libecmabuiltins/ecma-builtin-number-prototype.inc.h
@@ -1,4 +1,4 @@
-/* Copyright 2014 Samsung Electronics Co., Ltd.
+/* Copyright 2014-2015 Samsung Electronics Co., Ltd.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -37,7 +37,7 @@ OBJECT_ID (ECMA_BUILTIN_ID_NUMBER_PROTOTYPE)
 
 // 15.7.4.1
 OBJECT_VALUE (ECMA_MAGIC_STRING_CONSTRUCTOR,
-              ecma_builtin_get (ECMA_BUILTIN_ID_NUMBER),
+              ecma_builtin_get (object_out_p, ECMA_BUILTIN_ID_NUMBER),
               ECMA_PROPERTY_WRITABLE,
               ECMA_PROPERTY_NOT_ENUMERABLE,
               ECMA_PROPERTY_CONFIGURABLE)
diff --git a/src/libecmabuiltins/ecma-builtin-number.inc.h b/src/libecmabuiltins/ecma-builtin-number.inc.h
index ad8f09be8..15d36a56e 100644
--- a/src/libecmabuiltins/ecma-builtin-number.inc.h
+++ b/src/libecmabuiltins/ecma-builtin-number.inc.h
@@ -1,4 +1,4 @@
-/* Copyright 2014 Samsung Electronics Co., Ltd.
+/* Copyright 2014-2015 Samsung Electronics Co., Ltd.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -82,7 +82,7 @@ NUMBER_VALUE (ECMA_MAGIC_STRING_NEGATIVE_INFINITY_U,
 
 // 15.7.3.1
 OBJECT_VALUE (ECMA_MAGIC_STRING_PROTOTYPE,
-              ecma_builtin_get (ECMA_BUILTIN_ID_NUMBER_PROTOTYPE),
+              ecma_builtin_get (object_out_p, ECMA_BUILTIN_ID_NUMBER_PROTOTYPE),
               ECMA_PROPERTY_NOT_WRITABLE,
               ECMA_PROPERTY_NOT_ENUMERABLE,
               ECMA_PROPERTY_NOT_CONFIGURABLE)
diff --git a/src/libecmabuiltins/ecma-builtin-object-prototype.c b/src/libecmabuiltins/ecma-builtin-object-prototype.c
index fceb0f53a..7020901cd 100644
--- a/src/libecmabuiltins/ecma-builtin-object-prototype.c
+++ b/src/libecmabuiltins/ecma-builtin-object-prototype.c
@@ -80,8 +80,9 @@ ecma_builtin_object_prototype_object_to_string (ecma_completion_value_t &ret_val
     ecma_get_completion_value_value (obj_this_value, this_to_obj_completion);
 
     JERRY_ASSERT (ecma_is_value_object (obj_this_value));
-    ecma_property_t *class_prop_p = ecma_get_internal_property (ecma_get_object_from_value (obj_this_value),
-                                                                ECMA_INTERNAL_PROPERTY_CLASS);
+    ecma_object_ptr_t obj_this_p;
+    ecma_get_object_from_value (obj_this_p, obj_this_value);
+    ecma_property_t *class_prop_p = ecma_get_internal_property (obj_this_p, ECMA_INTERNAL_PROPERTY_CLASS);
     type_string = (ecma_magic_string_id_t) class_prop_p->u.internal_property.value;
 
     ecma_free_completion_value (this_to_obj_completion);
diff --git a/src/libecmabuiltins/ecma-builtin-object-prototype.inc.h b/src/libecmabuiltins/ecma-builtin-object-prototype.inc.h
index 8064782d5..5b4ee0c52 100644
--- a/src/libecmabuiltins/ecma-builtin-object-prototype.inc.h
+++ b/src/libecmabuiltins/ecma-builtin-object-prototype.inc.h
@@ -1,4 +1,4 @@
-/* Copyright 2014 Samsung Electronics Co., Ltd.
+/* Copyright 2014-2015 Samsung Electronics Co., Ltd.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -37,7 +37,7 @@ OBJECT_ID (ECMA_BUILTIN_ID_OBJECT_PROTOTYPE)
 
 // 15.2.4.1
 OBJECT_VALUE (ECMA_MAGIC_STRING_CONSTRUCTOR,
-              ecma_builtin_get (ECMA_BUILTIN_ID_OBJECT),
+              ecma_builtin_get (object_out_p, ECMA_BUILTIN_ID_OBJECT),
               ECMA_PROPERTY_WRITABLE,
               ECMA_PROPERTY_NOT_ENUMERABLE,
               ECMA_PROPERTY_CONFIGURABLE)
diff --git a/src/libecmabuiltins/ecma-builtin-object.c b/src/libecmabuiltins/ecma-builtin-object.c
index 5a8dff57c..ad842f3ce 100644
--- a/src/libecmabuiltins/ecma-builtin-object.c
+++ b/src/libecmabuiltins/ecma-builtin-object.c
@@ -80,7 +80,8 @@ ecma_builtin_object_dispatch_construct (ecma_completion_value_t &ret_value, /**<
 
   if (arguments_list_len == 0)
   {
-    ecma_object_t *obj_p = ecma_op_create_object_object_noarg ();
+    ecma_object_ptr_t obj_p;
+    ecma_op_create_object_object_noarg (obj_p);
 
     ecma_make_normal_completion_value (ret_value, ecma_value_t (obj_p));
   }
@@ -329,11 +330,14 @@ ecma_builtin_object_object_define_property (ecma_completion_value_t &ret_value,
 {
   if (!ecma_is_value_object (arg1))
   {
-    ecma_make_throw_obj_completion_value (ret_value, ecma_new_standard_error (ECMA_ERROR_TYPE));
+    ecma_object_ptr_t exception_obj_p;
+    ecma_new_standard_error (exception_obj_p, ECMA_ERROR_TYPE);
+    ecma_make_throw_obj_completion_value (ret_value, exception_obj_p);
   }
   else
   {
-    ecma_object_t *obj_p = ecma_get_object_from_value (arg1);
+    ecma_object_ptr_t obj_p;
+    ecma_get_object_from_value (obj_p, arg1);
 
     ECMA_TRY_CATCH (ret_value, ecma_op_to_string, name_str_value, arg2);
 
diff --git a/src/libecmabuiltins/ecma-builtin-object.inc.h b/src/libecmabuiltins/ecma-builtin-object.inc.h
index 0124af453..4229341ef 100644
--- a/src/libecmabuiltins/ecma-builtin-object.inc.h
+++ b/src/libecmabuiltins/ecma-builtin-object.inc.h
@@ -1,4 +1,4 @@
-/* Copyright 2014 Samsung Electronics Co., Ltd.
+/* Copyright 2014-2015 Samsung Electronics Co., Ltd.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -51,7 +51,7 @@ NUMBER_VALUE (ECMA_MAGIC_STRING_LENGTH,
 
 // 15.2.3.1
 OBJECT_VALUE (ECMA_MAGIC_STRING_PROTOTYPE,
-              ecma_builtin_get (ECMA_BUILTIN_ID_OBJECT_PROTOTYPE),
+              ecma_builtin_get (object_out_p, ECMA_BUILTIN_ID_OBJECT_PROTOTYPE),
               ECMA_PROPERTY_NOT_WRITABLE,
               ECMA_PROPERTY_NOT_ENUMERABLE,
               ECMA_PROPERTY_NOT_CONFIGURABLE)
diff --git a/src/libecmabuiltins/ecma-builtin-rangeerror-prototype.inc.h b/src/libecmabuiltins/ecma-builtin-rangeerror-prototype.inc.h
index 3bb70cb6f..d44b7ddcc 100644
--- a/src/libecmabuiltins/ecma-builtin-rangeerror-prototype.inc.h
+++ b/src/libecmabuiltins/ecma-builtin-rangeerror-prototype.inc.h
@@ -1,4 +1,4 @@
-/* Copyright 2014 Samsung Electronics Co., Ltd.
+/* Copyright 2014-2015 Samsung Electronics Co., Ltd.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -37,7 +37,7 @@ OBJECT_ID (ECMA_BUILTIN_ID_RANGE_ERROR_PROTOTYPE)
 
 // 15.11.7.8
 OBJECT_VALUE (ECMA_MAGIC_STRING_CONSTRUCTOR,
-              ecma_builtin_get (ECMA_BUILTIN_ID_RANGE_ERROR),
+              ecma_builtin_get (object_out_p, ECMA_BUILTIN_ID_RANGE_ERROR),
               ECMA_PROPERTY_WRITABLE,
               ECMA_PROPERTY_NOT_ENUMERABLE,
               ECMA_PROPERTY_CONFIGURABLE)
diff --git a/src/libecmabuiltins/ecma-builtin-rangeerror.c b/src/libecmabuiltins/ecma-builtin-rangeerror.c
index 8e86f8366..a31d53d31 100644
--- a/src/libecmabuiltins/ecma-builtin-rangeerror.c
+++ b/src/libecmabuiltins/ecma-builtin-rangeerror.c
@@ -61,15 +61,16 @@ ecma_builtin_range_error_dispatch_call (ecma_completion_value_t &ret_value, /**<
     ECMA_TRY_CATCH (ret_value, ecma_op_to_string, msg_str_value, arguments_list_p[0]);
 
     ecma_string_t *message_string_p = ecma_get_string_from_value (msg_str_value);
-    ecma_object_t *new_error_object_p = ecma_new_standard_error_with_message (ECMA_ERROR_RANGE,
-                                                                              message_string_p);
+    ecma_object_ptr_t new_error_object_p;
+    ecma_new_standard_error_with_message (new_error_object_p, ECMA_ERROR_RANGE, message_string_p);
     ecma_make_normal_completion_value (ret_value, ecma_value_t (new_error_object_p));
 
     ECMA_FINALIZE (msg_str_value);
   }
   else
   {
-    ecma_object_t *new_error_object_p = ecma_new_standard_error (ECMA_ERROR_RANGE);
+    ecma_object_ptr_t new_error_object_p;
+    ecma_new_standard_error (new_error_object_p, ECMA_ERROR_RANGE);
 
     ecma_make_normal_completion_value (ret_value, ecma_value_t (new_error_object_p));
   }
diff --git a/src/libecmabuiltins/ecma-builtin-rangeerror.inc.h b/src/libecmabuiltins/ecma-builtin-rangeerror.inc.h
index 3b53ad06e..a86869b22 100644
--- a/src/libecmabuiltins/ecma-builtin-rangeerror.inc.h
+++ b/src/libecmabuiltins/ecma-builtin-rangeerror.inc.h
@@ -1,4 +1,4 @@
-/* Copyright 2014 Samsung Electronics Co., Ltd.
+/* Copyright 2014-2015 Samsung Electronics Co., Ltd.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -51,7 +51,7 @@ NUMBER_VALUE (ECMA_MAGIC_STRING_LENGTH,
 
 // 15.11.3.1
 OBJECT_VALUE (ECMA_MAGIC_STRING_PROTOTYPE,
-              ecma_builtin_get (ECMA_BUILTIN_ID_RANGE_ERROR_PROTOTYPE),
+              ecma_builtin_get (object_out_p, ECMA_BUILTIN_ID_RANGE_ERROR_PROTOTYPE),
               ECMA_PROPERTY_NOT_WRITABLE,
               ECMA_PROPERTY_NOT_ENUMERABLE,
               ECMA_PROPERTY_NOT_CONFIGURABLE)
diff --git a/src/libecmabuiltins/ecma-builtin-referenceerror-prototype.inc.h b/src/libecmabuiltins/ecma-builtin-referenceerror-prototype.inc.h
index e640a0284..e5b48d4e1 100644
--- a/src/libecmabuiltins/ecma-builtin-referenceerror-prototype.inc.h
+++ b/src/libecmabuiltins/ecma-builtin-referenceerror-prototype.inc.h
@@ -1,4 +1,4 @@
-/* Copyright 2014 Samsung Electronics Co., Ltd.
+/* Copyright 2014-2015 Samsung Electronics Co., Ltd.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -37,7 +37,7 @@ OBJECT_ID (ECMA_BUILTIN_ID_REFERENCE_ERROR_PROTOTYPE)
 
 // 15.11.7.8
 OBJECT_VALUE (ECMA_MAGIC_STRING_CONSTRUCTOR,
-              ecma_builtin_get (ECMA_BUILTIN_ID_REFERENCE_ERROR),
+              ecma_builtin_get (object_out_p, ECMA_BUILTIN_ID_REFERENCE_ERROR),
               ECMA_PROPERTY_WRITABLE,
               ECMA_PROPERTY_NOT_ENUMERABLE,
               ECMA_PROPERTY_CONFIGURABLE)
diff --git a/src/libecmabuiltins/ecma-builtin-referenceerror.c b/src/libecmabuiltins/ecma-builtin-referenceerror.c
index c62cf8f63..1ac12555a 100644
--- a/src/libecmabuiltins/ecma-builtin-referenceerror.c
+++ b/src/libecmabuiltins/ecma-builtin-referenceerror.c
@@ -61,15 +61,16 @@ ecma_builtin_reference_error_dispatch_call (ecma_completion_value_t &ret_value,
     ECMA_TRY_CATCH (ret_value, ecma_op_to_string, msg_str_value, arguments_list_p[0]);
 
     ecma_string_t *message_string_p = ecma_get_string_from_value (msg_str_value);
-    ecma_object_t *new_error_object_p = ecma_new_standard_error_with_message (ECMA_ERROR_REFERENCE,
-                                                                              message_string_p);
+    ecma_object_ptr_t new_error_object_p;
+    ecma_new_standard_error_with_message (new_error_object_p, ECMA_ERROR_REFERENCE, message_string_p);
     ecma_make_normal_completion_value (ret_value, ecma_value_t (new_error_object_p));
 
     ECMA_FINALIZE (msg_str_value);
   }
   else
   {
-    ecma_object_t *new_error_object_p = ecma_new_standard_error (ECMA_ERROR_REFERENCE);
+    ecma_object_ptr_t new_error_object_p;
+    ecma_new_standard_error (new_error_object_p, ECMA_ERROR_REFERENCE);
 
     ecma_make_normal_completion_value (ret_value, ecma_value_t (new_error_object_p));
   }
diff --git a/src/libecmabuiltins/ecma-builtin-referenceerror.inc.h b/src/libecmabuiltins/ecma-builtin-referenceerror.inc.h
index b73f9da70..f2ca9bd9a 100644
--- a/src/libecmabuiltins/ecma-builtin-referenceerror.inc.h
+++ b/src/libecmabuiltins/ecma-builtin-referenceerror.inc.h
@@ -1,4 +1,4 @@
-/* Copyright 2014 Samsung Electronics Co., Ltd.
+/* Copyright 2014-2015 Samsung Electronics Co., Ltd.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -51,7 +51,7 @@ NUMBER_VALUE (ECMA_MAGIC_STRING_LENGTH,
 
 // 15.11.3.1
 OBJECT_VALUE (ECMA_MAGIC_STRING_PROTOTYPE,
-              ecma_builtin_get (ECMA_BUILTIN_ID_REFERENCE_ERROR_PROTOTYPE),
+              ecma_builtin_get (object_out_p, ECMA_BUILTIN_ID_REFERENCE_ERROR_PROTOTYPE),
               ECMA_PROPERTY_NOT_WRITABLE,
               ECMA_PROPERTY_NOT_ENUMERABLE,
               ECMA_PROPERTY_NOT_CONFIGURABLE)
diff --git a/src/libecmabuiltins/ecma-builtin-string-prototype.c b/src/libecmabuiltins/ecma-builtin-string-prototype.c
index 29ce6d45d..5ef5ea5f8 100644
--- a/src/libecmabuiltins/ecma-builtin-string-prototype.c
+++ b/src/libecmabuiltins/ecma-builtin-string-prototype.c
@@ -67,7 +67,8 @@ ecma_builtin_string_prototype_object_to_string (ecma_completion_value_t &ret_val
   }
   else if (ecma_is_value_object (this_arg))
   {
-    ecma_object_t *obj_p = ecma_get_object_from_value (this_arg);
+    ecma_object_ptr_t obj_p;
+    ecma_get_object_from_value (obj_p, this_arg);
 
     ecma_property_t *class_prop_p = ecma_get_internal_property (obj_p, ECMA_INTERNAL_PROPERTY_CLASS);
 
@@ -86,7 +87,9 @@ ecma_builtin_string_prototype_object_to_string (ecma_completion_value_t &ret_val
     }
   }
 
-  ecma_make_throw_obj_completion_value (ret_value, ecma_new_standard_error (ECMA_ERROR_TYPE));
+  ecma_object_ptr_t exception_obj_p;
+  ecma_new_standard_error (exception_obj_p, ECMA_ERROR_TYPE);
+  ecma_make_throw_obj_completion_value (ret_value, exception_obj_p);
 } /* ecma_builtin_string_prototype_object_to_string */
 
 /**
diff --git a/src/libecmabuiltins/ecma-builtin-string-prototype.inc.h b/src/libecmabuiltins/ecma-builtin-string-prototype.inc.h
index d1f9d6153..74af5da76 100644
--- a/src/libecmabuiltins/ecma-builtin-string-prototype.inc.h
+++ b/src/libecmabuiltins/ecma-builtin-string-prototype.inc.h
@@ -1,4 +1,4 @@
-/* Copyright 2014 Samsung Electronics Co., Ltd.
+/* Copyright 2014-2015 Samsung Electronics Co., Ltd.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -37,7 +37,7 @@ OBJECT_ID (ECMA_BUILTIN_ID_STRING_PROTOTYPE)
 
 // 15.5.4.1
 OBJECT_VALUE (ECMA_MAGIC_STRING_CONSTRUCTOR,
-              ecma_builtin_get (ECMA_BUILTIN_ID_STRING),
+              ecma_builtin_get (object_out_p, ECMA_BUILTIN_ID_STRING),
               ECMA_PROPERTY_WRITABLE,
               ECMA_PROPERTY_NOT_ENUMERABLE,
               ECMA_PROPERTY_CONFIGURABLE)
diff --git a/src/libecmabuiltins/ecma-builtin-string.c b/src/libecmabuiltins/ecma-builtin-string.c
index 7504f4af8..43d5dc000 100644
--- a/src/libecmabuiltins/ecma-builtin-string.c
+++ b/src/libecmabuiltins/ecma-builtin-string.c
@@ -77,7 +77,9 @@ ecma_builtin_string_object_from_char_code (ecma_completion_value_t &ret_value, /
 #if CONFIG_ECMA_CHAR_ENCODING == CONFIG_ECMA_CHAR_ASCII
     if ((uint16_char_code >> JERRY_BITSINBYTE) != 0)
     {
-      ecma_make_throw_obj_completion_value (ret_value, ecma_new_standard_error (ECMA_ERROR_TYPE));
+      ecma_object_ptr_t exception_obj_p;
+      ecma_new_standard_error (exception_obj_p, ECMA_ERROR_TYPE);
+      ecma_make_throw_obj_completion_value (ret_value, exception_obj_p);
     }
     else
     {
diff --git a/src/libecmabuiltins/ecma-builtin-string.inc.h b/src/libecmabuiltins/ecma-builtin-string.inc.h
index c92c12867..bef82cfbb 100644
--- a/src/libecmabuiltins/ecma-builtin-string.inc.h
+++ b/src/libecmabuiltins/ecma-builtin-string.inc.h
@@ -1,4 +1,4 @@
-/* Copyright 2014 Samsung Electronics Co., Ltd.
+/* Copyright 2014-2015 Samsung Electronics Co., Ltd.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -51,7 +51,7 @@ NUMBER_VALUE (ECMA_MAGIC_STRING_LENGTH,
 
 // 15.7.3.1
 OBJECT_VALUE (ECMA_MAGIC_STRING_PROTOTYPE,
-              ecma_builtin_get (ECMA_BUILTIN_ID_STRING_PROTOTYPE),
+              ecma_builtin_get (object_out_p, ECMA_BUILTIN_ID_STRING_PROTOTYPE),
               ECMA_PROPERTY_NOT_WRITABLE,
               ECMA_PROPERTY_NOT_ENUMERABLE,
               ECMA_PROPERTY_NOT_CONFIGURABLE)
diff --git a/src/libecmabuiltins/ecma-builtin-syntaxerror-prototype.inc.h b/src/libecmabuiltins/ecma-builtin-syntaxerror-prototype.inc.h
index e058f14c0..9deffacc5 100644
--- a/src/libecmabuiltins/ecma-builtin-syntaxerror-prototype.inc.h
+++ b/src/libecmabuiltins/ecma-builtin-syntaxerror-prototype.inc.h
@@ -1,4 +1,4 @@
-/* Copyright 2014 Samsung Electronics Co., Ltd.
+/* Copyright 2014-2015 Samsung Electronics Co., Ltd.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -37,7 +37,7 @@ OBJECT_ID (ECMA_BUILTIN_ID_SYNTAX_ERROR_PROTOTYPE)
 
 // 15.11.7.8
 OBJECT_VALUE (ECMA_MAGIC_STRING_CONSTRUCTOR,
-              ecma_builtin_get (ECMA_BUILTIN_ID_SYNTAX_ERROR),
+              ecma_builtin_get (object_out_p, ECMA_BUILTIN_ID_SYNTAX_ERROR),
               ECMA_PROPERTY_WRITABLE,
               ECMA_PROPERTY_NOT_ENUMERABLE,
               ECMA_PROPERTY_CONFIGURABLE)
diff --git a/src/libecmabuiltins/ecma-builtin-syntaxerror.c b/src/libecmabuiltins/ecma-builtin-syntaxerror.c
index 6138bc523..05914d69c 100644
--- a/src/libecmabuiltins/ecma-builtin-syntaxerror.c
+++ b/src/libecmabuiltins/ecma-builtin-syntaxerror.c
@@ -61,15 +61,16 @@ ecma_builtin_syntax_error_dispatch_call (ecma_completion_value_t &ret_value, /**
     ECMA_TRY_CATCH (ret_value, ecma_op_to_string, msg_str_value, arguments_list_p[0]);
 
     ecma_string_t *message_string_p = ecma_get_string_from_value (msg_str_value);
-    ecma_object_t *new_error_object_p = ecma_new_standard_error_with_message (ECMA_ERROR_SYNTAX,
-                                                                              message_string_p);
+    ecma_object_ptr_t new_error_object_p;
+    ecma_new_standard_error_with_message (new_error_object_p, ECMA_ERROR_SYNTAX, message_string_p);
     ecma_make_normal_completion_value (ret_value, ecma_value_t (new_error_object_p));
 
     ECMA_FINALIZE (msg_str_value);
   }
   else
   {
-    ecma_object_t *new_error_object_p = ecma_new_standard_error (ECMA_ERROR_SYNTAX);
+    ecma_object_ptr_t new_error_object_p;
+    ecma_new_standard_error (new_error_object_p, ECMA_ERROR_SYNTAX);
 
     ecma_make_normal_completion_value (ret_value, ecma_value_t (new_error_object_p));
   }
diff --git a/src/libecmabuiltins/ecma-builtin-syntaxerror.inc.h b/src/libecmabuiltins/ecma-builtin-syntaxerror.inc.h
index 159868562..36a0920f5 100644
--- a/src/libecmabuiltins/ecma-builtin-syntaxerror.inc.h
+++ b/src/libecmabuiltins/ecma-builtin-syntaxerror.inc.h
@@ -1,4 +1,4 @@
-/* Copyright 2014 Samsung Electronics Co., Ltd.
+/* Copyright 2014-2015 Samsung Electronics Co., Ltd.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -51,7 +51,7 @@ NUMBER_VALUE (ECMA_MAGIC_STRING_LENGTH,
 
 // 15.11.3.1
 OBJECT_VALUE (ECMA_MAGIC_STRING_PROTOTYPE,
-              ecma_builtin_get (ECMA_BUILTIN_ID_SYNTAX_ERROR_PROTOTYPE),
+              ecma_builtin_get (object_out_p, ECMA_BUILTIN_ID_SYNTAX_ERROR_PROTOTYPE),
               ECMA_PROPERTY_NOT_WRITABLE,
               ECMA_PROPERTY_NOT_ENUMERABLE,
               ECMA_PROPERTY_NOT_CONFIGURABLE)
diff --git a/src/libecmabuiltins/ecma-builtin-type-error-thrower.c b/src/libecmabuiltins/ecma-builtin-type-error-thrower.c
index 73e58b3c2..ac0ef0d6c 100644
--- a/src/libecmabuiltins/ecma-builtin-type-error-thrower.c
+++ b/src/libecmabuiltins/ecma-builtin-type-error-thrower.c
@@ -57,7 +57,9 @@ ecma_builtin_type_error_thrower_dispatch_call (ecma_completion_value_t &ret_valu
   JERRY_ASSERT (arguments_list_len == 0 || arguments_list_p != NULL);
 
   /* The object should throw TypeError */
-  ecma_make_throw_obj_completion_value (ret_value, ecma_new_standard_error (ECMA_ERROR_TYPE));
+  ecma_object_ptr_t exception_obj_p;
+  ecma_new_standard_error (exception_obj_p, ECMA_ERROR_TYPE);
+  ecma_make_throw_obj_completion_value (ret_value, exception_obj_p);
 } /* ecma_builtin_type_error_thrower_dispatch_call */
 
 /**
@@ -76,7 +78,9 @@ ecma_builtin_type_error_thrower_dispatch_construct (ecma_completion_value_t &ret
   JERRY_ASSERT (arguments_list_len == 0 || arguments_list_p != NULL);
 
   /* The object is not a constructor */
-  ecma_make_throw_obj_completion_value (ret_value, ecma_new_standard_error (ECMA_ERROR_TYPE));
+  ecma_object_ptr_t exception_obj_p;
+  ecma_new_standard_error (exception_obj_p, ECMA_ERROR_TYPE);
+  ecma_make_throw_obj_completion_value (ret_value, exception_obj_p);
 } /* ecma_builtin_type_error_thrower_dispatch_construct */
 
 /**
diff --git a/src/libecmabuiltins/ecma-builtin-typeerror-prototype.inc.h b/src/libecmabuiltins/ecma-builtin-typeerror-prototype.inc.h
index f93635684..793e3108b 100644
--- a/src/libecmabuiltins/ecma-builtin-typeerror-prototype.inc.h
+++ b/src/libecmabuiltins/ecma-builtin-typeerror-prototype.inc.h
@@ -1,4 +1,4 @@
-/* Copyright 2014 Samsung Electronics Co., Ltd.
+/* Copyright 2014-2015 Samsung Electronics Co., Ltd.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -37,7 +37,7 @@ OBJECT_ID (ECMA_BUILTIN_ID_TYPE_ERROR_PROTOTYPE)
 
 // 15.11.7.8
 OBJECT_VALUE (ECMA_MAGIC_STRING_CONSTRUCTOR,
-              ecma_builtin_get (ECMA_BUILTIN_ID_TYPE_ERROR),
+              ecma_builtin_get (object_out_p, ECMA_BUILTIN_ID_TYPE_ERROR),
               ECMA_PROPERTY_WRITABLE,
               ECMA_PROPERTY_NOT_ENUMERABLE,
               ECMA_PROPERTY_CONFIGURABLE)
diff --git a/src/libecmabuiltins/ecma-builtin-typeerror.c b/src/libecmabuiltins/ecma-builtin-typeerror.c
index bb7cfd063..9dc6fbf4f 100644
--- a/src/libecmabuiltins/ecma-builtin-typeerror.c
+++ b/src/libecmabuiltins/ecma-builtin-typeerror.c
@@ -61,15 +61,16 @@ ecma_builtin_type_error_dispatch_call (ecma_completion_value_t &ret_value, /**<
     ECMA_TRY_CATCH (ret_value, ecma_op_to_string, msg_str_value, arguments_list_p[0]);
 
     ecma_string_t *message_string_p = ecma_get_string_from_value (msg_str_value);
-    ecma_object_t *new_error_object_p = ecma_new_standard_error_with_message (ECMA_ERROR_TYPE,
-                                                                              message_string_p);
+    ecma_object_ptr_t new_error_object_p;
+    ecma_new_standard_error_with_message (new_error_object_p, ECMA_ERROR_TYPE, message_string_p);
     ecma_make_normal_completion_value (ret_value, ecma_value_t (new_error_object_p));
 
     ECMA_FINALIZE (msg_str_value);
   }
   else
   {
-    ecma_object_t *new_error_object_p = ecma_new_standard_error (ECMA_ERROR_TYPE);
+    ecma_object_ptr_t new_error_object_p;
+    ecma_new_standard_error (new_error_object_p, ECMA_ERROR_TYPE);
 
     ecma_make_normal_completion_value (ret_value, ecma_value_t (new_error_object_p));
   }
diff --git a/src/libecmabuiltins/ecma-builtin-typeerror.inc.h b/src/libecmabuiltins/ecma-builtin-typeerror.inc.h
index 1bc08c9a1..2dc88fc14 100644
--- a/src/libecmabuiltins/ecma-builtin-typeerror.inc.h
+++ b/src/libecmabuiltins/ecma-builtin-typeerror.inc.h
@@ -1,4 +1,4 @@
-/* Copyright 2014 Samsung Electronics Co., Ltd.
+/* Copyright 2014-2015 Samsung Electronics Co., Ltd.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -51,7 +51,7 @@ NUMBER_VALUE (ECMA_MAGIC_STRING_LENGTH,
 
 // 15.11.3.1
 OBJECT_VALUE (ECMA_MAGIC_STRING_PROTOTYPE,
-              ecma_builtin_get (ECMA_BUILTIN_ID_TYPE_ERROR_PROTOTYPE),
+              ecma_builtin_get (object_out_p, ECMA_BUILTIN_ID_TYPE_ERROR_PROTOTYPE),
               ECMA_PROPERTY_NOT_WRITABLE,
               ECMA_PROPERTY_NOT_ENUMERABLE,
               ECMA_PROPERTY_NOT_CONFIGURABLE)
diff --git a/src/libecmabuiltins/ecma-builtin-urierror-prototype.inc.h b/src/libecmabuiltins/ecma-builtin-urierror-prototype.inc.h
index 6f0e1c238..99e73433c 100644
--- a/src/libecmabuiltins/ecma-builtin-urierror-prototype.inc.h
+++ b/src/libecmabuiltins/ecma-builtin-urierror-prototype.inc.h
@@ -1,4 +1,4 @@
-/* Copyright 2014 Samsung Electronics Co., Ltd.
+/* Copyright 2014-2015 Samsung Electronics Co., Ltd.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -37,7 +37,7 @@ OBJECT_ID (ECMA_BUILTIN_ID_URI_ERROR_PROTOTYPE)
 
 // 15.11.7.8
 OBJECT_VALUE (ECMA_MAGIC_STRING_CONSTRUCTOR,
-              ecma_builtin_get (ECMA_BUILTIN_ID_URI_ERROR),
+              ecma_builtin_get (object_out_p, ECMA_BUILTIN_ID_URI_ERROR),
               ECMA_PROPERTY_WRITABLE,
               ECMA_PROPERTY_NOT_ENUMERABLE,
               ECMA_PROPERTY_CONFIGURABLE)
diff --git a/src/libecmabuiltins/ecma-builtin-urierror.c b/src/libecmabuiltins/ecma-builtin-urierror.c
index 24eb3ce9c..8bbb3d9ee 100644
--- a/src/libecmabuiltins/ecma-builtin-urierror.c
+++ b/src/libecmabuiltins/ecma-builtin-urierror.c
@@ -61,15 +61,16 @@ ecma_builtin_uri_error_dispatch_call (ecma_completion_value_t &ret_value, /**< o
     ECMA_TRY_CATCH (ret_value, ecma_op_to_string, msg_str_value, arguments_list_p[0]);
 
     ecma_string_t *message_string_p = ecma_get_string_from_value (msg_str_value);
-    ecma_object_t *new_error_object_p = ecma_new_standard_error_with_message (ECMA_ERROR_URI,
-                                                                              message_string_p);
+    ecma_object_ptr_t new_error_object_p;
+    ecma_new_standard_error_with_message (new_error_object_p, ECMA_ERROR_URI, message_string_p);
     ecma_make_normal_completion_value (ret_value, ecma_value_t (new_error_object_p));
 
     ECMA_FINALIZE (msg_str_value);
   }
   else
   {
-    ecma_object_t *new_error_object_p = ecma_new_standard_error (ECMA_ERROR_URI);
+    ecma_object_ptr_t new_error_object_p;
+    ecma_new_standard_error (new_error_object_p, ECMA_ERROR_URI);
 
     ecma_make_normal_completion_value (ret_value, ecma_value_t (new_error_object_p));
   }
diff --git a/src/libecmabuiltins/ecma-builtin-urierror.inc.h b/src/libecmabuiltins/ecma-builtin-urierror.inc.h
index 80125b19e..298942c9c 100644
--- a/src/libecmabuiltins/ecma-builtin-urierror.inc.h
+++ b/src/libecmabuiltins/ecma-builtin-urierror.inc.h
@@ -1,4 +1,4 @@
-/* Copyright 2014 Samsung Electronics Co., Ltd.
+/* Copyright 2014-2015 Samsung Electronics Co., Ltd.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -51,7 +51,7 @@ NUMBER_VALUE (ECMA_MAGIC_STRING_LENGTH,
 
 // 15.11.3.1
 OBJECT_VALUE (ECMA_MAGIC_STRING_PROTOTYPE,
-              ecma_builtin_get (ECMA_BUILTIN_ID_URI_ERROR_PROTOTYPE),
+              ecma_builtin_get (object_out_p, ECMA_BUILTIN_ID_URI_ERROR_PROTOTYPE),
               ECMA_PROPERTY_NOT_WRITABLE,
               ECMA_PROPERTY_NOT_ENUMERABLE,
               ECMA_PROPERTY_NOT_CONFIGURABLE)
diff --git a/src/libecmabuiltins/ecma-builtins-internal.h b/src/libecmabuiltins/ecma-builtins-internal.h
index 1b81df499..c0c260a39 100644
--- a/src/libecmabuiltins/ecma-builtins-internal.h
+++ b/src/libecmabuiltins/ecma-builtins-internal.h
@@ -47,8 +47,9 @@
 #define ECMA_BUILTIN_ROUTINE_ID_BUILT_IN_ROUTINE_ID_WIDTH (16)
 
 /* ecma-builtins.c */
-extern ecma_object_t*
-ecma_builtin_make_function_object_for_routine (ecma_builtin_id_t builtin_id,
+extern void
+ecma_builtin_make_function_object_for_routine (ecma_object_ptr_t &ret_val,
+                                               ecma_builtin_id_t builtin_id,
                                                ecma_magic_string_id_t routine_id,
                                                ecma_number_t length_prop_num_value);
 extern int32_t
@@ -77,7 +78,7 @@ ecma_builtin_ ## lowercase_name ## _dispatch_routine (ecma_completion_value_t &r
                                                       const ecma_value_t arguments_list [], \
                                                       ecma_length_t arguments_number); \
 extern ecma_property_t* \
-ecma_builtin_ ## lowercase_name ## _try_to_instantiate_property (ecma_object_t *obj_p, \
+ecma_builtin_ ## lowercase_name ## _try_to_instantiate_property (const ecma_object_ptr_t& obj_p, \
                                                                  ecma_string_t *prop_name_p); \
 extern void \
 ecma_builtin_ ## lowercase_name ## _sort_property_names (void);
@@ -94,7 +95,8 @@ ecma_builtin_ ## lowercase_name ## _sort_property_names (void);
   { \
     jerry_ref_unused_variables (0, __VA_ARGS__); \
   } \
-  ecma_object_t *cp_error_p = ecma_builtin_get (ECMA_BUILTIN_ID_COMPACT_PROFILE_ERROR); \
+  ecma_object_ptr_t cp_error_p; \
+  ecma_builtin_get (cp_error_p, ECMA_BUILTIN_ID_COMPACT_PROFILE_ERROR); \
   ecma_make_throw_obj_completion_value (ret_value, cp_error_p); \
   return; \
 }
diff --git a/src/libecmabuiltins/ecma-builtins.c b/src/libecmabuiltins/ecma-builtins.c
index da78b9917..58f271cee 100644
--- a/src/libecmabuiltins/ecma-builtins.c
+++ b/src/libecmabuiltins/ecma-builtins.c
@@ -49,18 +49,21 @@ static ecma_object_t* ecma_builtin_objects [ECMA_BUILTIN_ID__COUNT];
  * Check if passed object is the instance of specified built-in.
  */
 bool
-ecma_builtin_is (ecma_object_t *obj_p, /**< pointer to an object */
+ecma_builtin_is (const ecma_object_ptr_t& obj_p, /**< pointer to an object */
                  ecma_builtin_id_t builtin_id) /**< id of built-in to check on */
 {
-  JERRY_ASSERT (obj_p != NULL && !ecma_is_lexical_environment (obj_p));
+  JERRY_ASSERT (obj_p.is_not_null () && !ecma_is_lexical_environment (obj_p));
   JERRY_ASSERT (builtin_id < ECMA_BUILTIN_ID__COUNT);
 
-  if (unlikely (ecma_builtin_objects [builtin_id] == NULL))
+  ecma_object_ptr_t builtin_obj_p;
+  builtin_obj_p = ecma_builtin_objects [builtin_id];
+
+  if (unlikely (builtin_obj_p.is_null ()))
   {
     ecma_instantiate_builtin (builtin_id);
   }
 
-  return (obj_p == ecma_builtin_objects [builtin_id]);
+  return (obj_p == builtin_obj_p);
 } /* ecma_builtin_is */
 
 /**
@@ -68,19 +71,24 @@ ecma_builtin_is (ecma_object_t *obj_p, /**< pointer to an object */
  *
  * @return pointer to the object's instance
  */
-ecma_object_t*
-ecma_builtin_get (ecma_builtin_id_t builtin_id) /**< id of built-in to check on */
+void
+ecma_builtin_get (ecma_object_ptr_t &ret_val, /**< out: object pointer */
+                  ecma_builtin_id_t builtin_id) /**< id of built-in to check on */
 {
   JERRY_ASSERT (builtin_id < ECMA_BUILTIN_ID__COUNT);
 
-  if (unlikely (ecma_builtin_objects [builtin_id] == NULL))
+  ecma_object_ptr_t builtin_obj_p;
+  builtin_obj_p = ecma_builtin_objects [builtin_id];
+
+  if (unlikely (builtin_obj_p.is_null ()))
   {
     ecma_instantiate_builtin (builtin_id);
+    builtin_obj_p = ecma_builtin_objects [builtin_id];
   }
 
-  ecma_ref_object (ecma_builtin_objects [builtin_id]);
+  ecma_ref_object (builtin_obj_p);
 
-  return ecma_builtin_objects [builtin_id];
+  ret_val = builtin_obj_p;
 } /* ecma_builtin_get */
 
 /**
@@ -91,14 +99,15 @@ ecma_builtin_get (ecma_builtin_id_t builtin_id) /**< id of built-in to check on
  *
  * @return pointer to the object
  */
-static ecma_object_t*
-ecma_builtin_init_object (ecma_builtin_id_t obj_builtin_id, /**< built-in ID */
-                          ecma_object_t* prototype_obj_p, /**< prototype object */
+static void
+ecma_builtin_init_object (ecma_object_ptr_t &object_obj_p, /**< out: object pointer */
+                          ecma_builtin_id_t obj_builtin_id, /**< built-in ID */
+                          const ecma_object_ptr_t& prototype_obj_p, /**< prototype object */
                           ecma_object_type_t obj_type, /**< object's type */
                           ecma_magic_string_id_t obj_class, /**< object's class */
                           bool is_extensible) /**< value of object's [[Extensible]] property */
 {
-  ecma_object_t *object_obj_p = ecma_create_object (prototype_obj_p, is_extensible, obj_type);
+  ecma_create_object (object_obj_p, prototype_obj_p, is_extensible, obj_type);
 
   ecma_property_t *class_prop_p = ecma_create_internal_property (object_obj_p,
                                                                  ECMA_INTERNAL_PROPERTY_CLASS);
@@ -156,8 +165,6 @@ ecma_builtin_init_object (ecma_builtin_id_t obj_builtin_id, /**< built-in ID */
       break;
     }
   }
-
-  return object_obj_p;
 } /* ecma_builtin_init_object */
 
 /**
@@ -193,27 +200,26 @@ ecma_instantiate_builtin (ecma_builtin_id_t id) /**< built-in id */
       JERRY_ASSERT (ecma_builtin_objects [builtin_id] == NULL); \
       ecma_builtin_ ## lowercase_name ## _sort_property_names (); \
       \
-      ecma_object_t *prototype_obj_p; \
-      if (object_prototype_builtin_id == ECMA_BUILTIN_ID__COUNT) \
+      ecma_object_ptr_t prototype_obj_p; \
+      if (object_prototype_builtin_id != ECMA_BUILTIN_ID__COUNT) \
       { \
-        prototype_obj_p = NULL; \
-      } \
-      else \
-      { \
-        if (ecma_builtin_objects [object_prototype_builtin_id] == NULL) \
+        prototype_obj_p = ecma_builtin_objects [object_prototype_builtin_id]; \
+        if (prototype_obj_p.is_null ()) \
         { \
           ecma_instantiate_builtin (object_prototype_builtin_id); \
         } \
         prototype_obj_p = ecma_builtin_objects [object_prototype_builtin_id]; \
-        JERRY_ASSERT (prototype_obj_p != NULL); \
+        JERRY_ASSERT (prototype_obj_p.is_not_null ()); \
       } \
       \
-      ecma_object_t *builtin_obj_p =  ecma_builtin_init_object (builtin_id, \
-                                                                prototype_obj_p, \
-                                                                object_type, \
-                                                                object_class, \
-                                                                is_extensible); \
-      ecma_builtin_objects [builtin_id] = builtin_obj_p; \
+      ecma_object_ptr_t builtin_obj_p; \
+      ecma_builtin_init_object (builtin_obj_p, \
+                                builtin_id, \
+                                prototype_obj_p, \
+                                object_type, \
+                                object_class, \
+                                is_extensible); \
+      ecma_builtin_objects [builtin_id] = (ecma_object_t*) builtin_obj_p; \
       \
       break; \
     }
@@ -238,10 +244,11 @@ ecma_finalize_builtins (void)
        id < ECMA_BUILTIN_ID__COUNT;
        id = (ecma_builtin_id_t) (id + 1))
   {
-    if (ecma_builtin_objects [id] != NULL)
+    ecma_object_ptr_t builtin_obj_p;
+    builtin_obj_p = ecma_builtin_objects [id];
+    if (builtin_obj_p.is_not_null ())
     {
-      ecma_deref_object (ecma_builtin_objects [id]);
-
+      ecma_deref_object (builtin_obj_p);
       ecma_builtin_objects [id] = NULL;
     }
   }
@@ -256,7 +263,7 @@ ecma_finalize_builtins (void)
  *         NULL - otherwise.
  */
 ecma_property_t*
-ecma_builtin_try_to_instantiate_property (ecma_object_t *object_p, /**< object */
+ecma_builtin_try_to_instantiate_property (const ecma_object_ptr_t& object_p, /**< object */
                                           ecma_string_t *string_p) /**< property's name */
 {
   JERRY_ASSERT (ecma_get_object_is_builtin (object_p));
@@ -307,8 +314,9 @@ ecma_builtin_try_to_instantiate_property (ecma_object_t *object_p, /**< object *
  *
  * @return pointer to constructed Function object
  */
-ecma_object_t*
-ecma_builtin_make_function_object_for_routine (ecma_builtin_id_t builtin_id, /**< identifier of built-in object
+void
+ecma_builtin_make_function_object_for_routine (ecma_object_ptr_t &func_obj_p, /**< out: object pointer */
+                                               ecma_builtin_id_t builtin_id, /**< identifier of built-in object
                                                                                   that initially contains property
                                                                                   with the routine */
                                                ecma_magic_string_id_t routine_id, /**< name of the built-in
@@ -317,9 +325,10 @@ ecma_builtin_make_function_object_for_routine (ecma_builtin_id_t builtin_id, /**
                                                                                          of 'length' property
                                                                                          of function object to create */
 {
-  ecma_object_t *prototype_obj_p = ecma_builtin_get (ECMA_BUILTIN_ID_FUNCTION_PROTOTYPE);
+  ecma_object_ptr_t prototype_obj_p;
+  ecma_builtin_get (prototype_obj_p, ECMA_BUILTIN_ID_FUNCTION_PROTOTYPE);
 
-  ecma_object_t *func_obj_p = ecma_create_object (prototype_obj_p, true, ECMA_OBJECT_TYPE_BUILT_IN_FUNCTION);
+  ecma_create_object (func_obj_p, prototype_obj_p, true, ECMA_OBJECT_TYPE_BUILT_IN_FUNCTION);
 
   ecma_deref_object (prototype_obj_p);
 
@@ -350,8 +359,6 @@ ecma_builtin_make_function_object_for_routine (ecma_builtin_id_t builtin_id, /**
   *len_p = length_prop_num_value;
 
   ecma_set_named_data_property_value (len_prop_p, ecma_value_t (len_p));
-
-  return func_obj_p;
 } /* ecma_builtin_make_function_object_for_routine */
 
 /**
@@ -361,7 +368,7 @@ ecma_builtin_make_function_object_for_routine (ecma_builtin_id_t builtin_id, /**
  */
 void
 ecma_builtin_dispatch_call (ecma_completion_value_t &ret_value, /**< out: completion value */
-                            ecma_object_t *obj_p, /**< built-in object */
+                            const ecma_object_ptr_t& obj_p, /**< built-in object */
                             const ecma_value_t& this_arg_value, /**< 'this' argument value */
                             const ecma_value_t *arguments_list_p, /**< arguments list */
                             ecma_length_t arguments_list_len) /**< length of the arguments list */
@@ -456,7 +463,7 @@ ecma_builtin_dispatch_call (ecma_completion_value_t &ret_value, /**< out: comple
  */
 void
 ecma_builtin_dispatch_construct (ecma_completion_value_t &ret_value, /**< out: completion value */
-                                 ecma_object_t *obj_p, /**< built-in object */
+                                 const ecma_object_ptr_t& obj_p, /**< built-in object */
                                  const ecma_value_t *arguments_list_p, /**< arguments list */
                                  ecma_length_t arguments_list_len) /**< length of the arguments list */
 {
diff --git a/src/libecmabuiltins/ecma-builtins.h b/src/libecmabuiltins/ecma-builtins.h
index f4f30612a..25c823bce 100644
--- a/src/libecmabuiltins/ecma-builtins.h
+++ b/src/libecmabuiltins/ecma-builtins.h
@@ -41,21 +41,22 @@ extern void ecma_finalize_builtins (void);
 
 extern void
 ecma_builtin_dispatch_call (ecma_completion_value_t &ret_value,
-                            ecma_object_t *obj_p,
+                            const ecma_object_ptr_t& obj_p,
                             const ecma_value_t& this_arg,
                             const ecma_value_t *arguments_list_p,
                             ecma_length_t arguments_list_len);
 extern void
 ecma_builtin_dispatch_construct (ecma_completion_value_t &ret_value,
-                                 ecma_object_t *obj_p,
+                                 const ecma_object_ptr_t& obj_p,
                                  const ecma_value_t *arguments_list_p,
                                  ecma_length_t arguments_list_len);
 extern ecma_property_t*
-ecma_builtin_try_to_instantiate_property (ecma_object_t *object_p,
+ecma_builtin_try_to_instantiate_property (const ecma_object_ptr_t& object_p,
                                           ecma_string_t *string_p);
 extern bool
-ecma_builtin_is (ecma_object_t *obj_p,
+ecma_builtin_is (const ecma_object_ptr_t& obj_p,
                  ecma_builtin_id_t builtin_id);
-extern ecma_object_t*
-ecma_builtin_get (ecma_builtin_id_t builtin_id);
+extern void
+ecma_builtin_get (ecma_object_ptr_t &ret_val,
+                  ecma_builtin_id_t builtin_id);
 #endif /* !ECMA_BUILTINS_H */
diff --git a/src/libecmaobjects/ecma-alloc.c b/src/libecmaobjects/ecma-alloc.c
index 685b4e35b..e9a2d7c4d 100644
--- a/src/libecmaobjects/ecma-alloc.c
+++ b/src/libecmaobjects/ecma-alloc.c
@@ -73,14 +73,41 @@ JERRY_STATIC_ASSERT (sizeof (ecma_label_descriptor_t) == sizeof (uint64_t));
   mem_pools_free ((uint8_t*) p ## ecma_type); \
 }
 
+/**
+ * Template of an allocation routine.
+ */
+#define ALLOC_MANAGED_PTR(ecma_type) void \
+  ecma_alloc_ ## ecma_type (ecma_ ## ecma_type ## _ptr_t &ret_ ## ecma_type ## _p) \
+{ \
+  ret_ ## ecma_type ## _p = (ecma_ ## ecma_type ## _t *) mem_pools_alloc (); \
+  \
+  JERRY_ASSERT (ret_ ## ecma_type ## _p.is_not_null ()); \
+}
+
+/**
+ * Deallocation routine template
+ */
+#define DEALLOC_MANAGED_PTR(ecma_type) void \
+  ecma_dealloc_ ## ecma_type (ecma_ ## ecma_type ## _ptr_t& ecma_type ## _p) \
+{ \
+  ecma_ ## ecma_type ## _t* ecma_type ## _tmp_p = (ecma_ ## ecma_type ## _t*) ecma_type ## _p; \
+  ecma_type ## _p = (ecma_ ## ecma_type ## _t *) NULL; \
+  \
+  mem_pools_free ((uint8_t*) ecma_type ## _tmp_p); \
+}
+
 /**
  * Declaration of alloc/free routine for specified ecma-type.
  */
 #define DECLARE_ROUTINES_FOR(ecma_type) \
   ALLOC(ecma_type) \
   DEALLOC(ecma_type)
+#define DECLARE_MANAGED_PTR_ROUTINES_FOR(ecma_type) \
+  ALLOC_MANAGED_PTR(ecma_type) \
+  DEALLOC_MANAGED_PTR(ecma_type)
+
+DECLARE_MANAGED_PTR_ROUTINES_FOR (object)
 
-DECLARE_ROUTINES_FOR (object)
 DECLARE_ROUTINES_FOR (property)
 DECLARE_ROUTINES_FOR (number)
 DECLARE_ROUTINES_FOR (collection_header)
diff --git a/src/libecmaobjects/ecma-alloc.h b/src/libecmaobjects/ecma-alloc.h
index 0441a4063..505ec1f1b 100644
--- a/src/libecmaobjects/ecma-alloc.h
+++ b/src/libecmaobjects/ecma-alloc.h
@@ -1,4 +1,4 @@
-/* Copyright 2014 Samsung Electronics Co., Ltd.
+/* Copyright 2014-2015 Samsung Electronics Co., Ltd.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -30,12 +30,12 @@
  *
  * @return pointer to allocated memory
  */
-extern ecma_object_t *ecma_alloc_object (void);
+extern void ecma_alloc_object (ecma_object_ptr_t &ret_obj_p);
 
 /**
  * Dealloc memory from an ecma-object
  */
-extern void ecma_dealloc_object (ecma_object_t *object_p);
+extern void ecma_dealloc_object (ecma_object_ptr_t &object_p);
 
 /**
  * Allocate memory for ecma-property
diff --git a/src/libecmaobjects/ecma-gc.c b/src/libecmaobjects/ecma-gc.c
index 4d77c91ed..0b3309f55 100644
--- a/src/libecmaobjects/ecma-gc.c
+++ b/src/libecmaobjects/ecma-gc.c
@@ -37,20 +37,20 @@
 /**
  * Global lists of objects sorted by generation identifier.
  */
-static ecma_object_t *ecma_gc_objects_lists[ ECMA_GC_GEN_COUNT ];
+static ecma_object_t* ecma_gc_objects_lists[ ECMA_GC_GEN_COUNT ];
 
-static void ecma_gc_mark (ecma_object_t *object_p, ecma_gc_gen_t maximum_gen_to_traverse);
-static void ecma_gc_sweep (ecma_object_t *object_p);
+static void ecma_gc_mark (const ecma_object_ptr_t &object_p, ecma_gc_gen_t maximum_gen_to_traverse);
+static void ecma_gc_sweep (ecma_object_ptr_t &object_p);
 
 /**
  * Get GC reference counter of the object.
  */
 static uint32_t
-ecma_gc_get_object_refs (ecma_object_t *object_p) /**< object */
+ecma_gc_get_object_refs (const ecma_object_ptr_t &object_p) /**< object */
 {
-  JERRY_ASSERT (object_p != NULL);
+  JERRY_ASSERT (object_p.is_not_null ());
 
-  return (uint32_t) jrt_extract_bit_field (object_p->container,
+  return (uint32_t) jrt_extract_bit_field (((ecma_object_t*) object_p)->container,
                                            ECMA_OBJECT_GC_REFS_POS,
                                            ECMA_OBJECT_GC_REFS_WIDTH);
 } /* ecma_gc_get_object_refs */
@@ -59,26 +59,26 @@ ecma_gc_get_object_refs (ecma_object_t *object_p) /**< object */
  * Set GC reference counter of the object.
  */
 static void
-ecma_gc_set_object_refs (ecma_object_t *object_p, /**< object */
+ecma_gc_set_object_refs (const ecma_object_ptr_t &object_p, /**< object */
                          uint32_t refs) /**< new reference counter */
 {
-  JERRY_ASSERT (object_p != NULL);
+  JERRY_ASSERT (object_p.is_not_null ());
 
-  object_p->container = jrt_set_bit_field_value (object_p->container,
-                                                 refs,
-                                                 ECMA_OBJECT_GC_REFS_POS,
-                                                 ECMA_OBJECT_GC_REFS_WIDTH);
+  ((ecma_object_t*) object_p)->container = jrt_set_bit_field_value (((ecma_object_t*) object_p)->container,
+                                                                    refs,
+                                                                    ECMA_OBJECT_GC_REFS_POS,
+                                                                    ECMA_OBJECT_GC_REFS_WIDTH);
 } /* ecma_gc_set_object_refs */
 
 /**
  * Get GC generation of the object.
  */
 static ecma_gc_gen_t
-ecma_gc_get_object_generation (ecma_object_t *object_p) /**< object */
+ecma_gc_get_object_generation (const ecma_object_ptr_t &object_p) /**< object */
 {
-  JERRY_ASSERT (object_p != NULL);
+  JERRY_ASSERT (object_p.is_not_null ());
 
-  ecma_gc_gen_t ret = (ecma_gc_gen_t) jrt_extract_bit_field (object_p->container,
+  ecma_gc_gen_t ret = (ecma_gc_gen_t) jrt_extract_bit_field (((ecma_object_t*) object_p)->container,
                                                              ECMA_OBJECT_GC_GENERATION_POS,
                                                              ECMA_OBJECT_GC_GENERATION_WIDTH);
 
@@ -91,48 +91,50 @@ ecma_gc_get_object_generation (ecma_object_t *object_p) /**< object */
  * Set GC generation of the object.
  */
 static void
-ecma_gc_set_object_generation (ecma_object_t *object_p, /**< object */
+ecma_gc_set_object_generation (const ecma_object_ptr_t &object_p, /**< object */
                                ecma_gc_gen_t generation) /**< generation */
 {
-  JERRY_ASSERT (object_p != NULL);
+  JERRY_ASSERT (object_p.is_not_null ());
   JERRY_ASSERT (generation < ECMA_GC_GEN_COUNT);
 
-  object_p->container = jrt_set_bit_field_value (object_p->container,
-                                                 generation,
-                                                 ECMA_OBJECT_GC_GENERATION_POS,
-                                                 ECMA_OBJECT_GC_GENERATION_WIDTH);
+  ((ecma_object_t*) object_p)->container = jrt_set_bit_field_value (((ecma_object_t*) object_p)->container,
+                                                                    generation,
+                                                                    ECMA_OBJECT_GC_GENERATION_POS,
+                                                                    ECMA_OBJECT_GC_GENERATION_WIDTH);
 } /* ecma_gc_set_object_generation */
 
 /**
  * Get next object in list of objects with same generation.
  */
-static ecma_object_t*
-ecma_gc_get_object_next (ecma_object_t *object_p) /**< object */
+static void
+ecma_gc_get_object_next (ecma_object_ptr_t & ret_val, /**< out: object pointer */
+                         const ecma_object_ptr_t &object_p) /**< object */
 {
-  JERRY_ASSERT (object_p != NULL);
+  JERRY_ASSERT (object_p.is_not_null ());
 
   JERRY_ASSERT (sizeof (uintptr_t) * JERRY_BITSINBYTE >= ECMA_OBJECT_GC_NEXT_CP_WIDTH);
-  uintptr_t next_cp = (uintptr_t) jrt_extract_bit_field (object_p->container,
+  uintptr_t next_cp = (uintptr_t) jrt_extract_bit_field (((ecma_object_t*) object_p)->container,
                                                          ECMA_OBJECT_GC_NEXT_CP_POS,
                                                          ECMA_OBJECT_GC_NEXT_CP_WIDTH);
 
-  return ECMA_GET_POINTER (ecma_object_t,
-                           next_cp);
+  ret_val.unpack_from (next_cp, true);
 } /* ecma_gc_get_object_next */
 
 /**
  * Set next object in list of objects with same generation.
  */
 static void
-ecma_gc_set_object_next (ecma_object_t *object_p, /**< object */
-                         ecma_object_t *next_object_p) /**< next object */
+ecma_gc_set_object_next (const ecma_object_ptr_t &object_mp, /**< object */
+                         const ecma_object_ptr_t &next_object_p) /**< next object */
 {
-  JERRY_ASSERT (object_p != NULL);
-
-  uintptr_t next_cp;
-  ECMA_SET_POINTER (next_cp, next_object_p);
+  JERRY_ASSERT (object_mp.is_not_null ());
 
   JERRY_ASSERT (sizeof (uintptr_t) * JERRY_BITSINBYTE >= ECMA_OBJECT_GC_NEXT_CP_WIDTH);
+
+  uintptr_t next_cp;
+  next_object_p.pack_to (next_cp, true);
+
+  ecma_object_t *object_p = (ecma_object_t*) object_mp;
   object_p->container = jrt_set_bit_field_value (object_p->container,
                                                  next_cp,
                                                  ECMA_OBJECT_GC_NEXT_CP_POS,
@@ -143,11 +145,11 @@ ecma_gc_set_object_next (ecma_object_t *object_p, /**< object */
  * Get visited flag of the object.
  */
 static bool
-ecma_gc_is_object_visited (ecma_object_t *object_p) /**< object */
+ecma_gc_is_object_visited (const ecma_object_ptr_t &object_p) /**< object */
 {
-  JERRY_ASSERT (object_p != NULL);
+  JERRY_ASSERT (object_p.is_not_null ());
 
-  return jrt_extract_bit_field (object_p->container,
+  return jrt_extract_bit_field (((ecma_object_t*) object_p)->container,
                                 ECMA_OBJECT_GC_VISITED_POS,
                                 ECMA_OBJECT_GC_VISITED_WIDTH);
 } /* ecma_gc_is_object_visited */
@@ -156,11 +158,12 @@ ecma_gc_is_object_visited (ecma_object_t *object_p) /**< object */
  * Set visited flag of the object.
  */
 static void
-ecma_gc_set_object_visited (ecma_object_t *object_p, /**< object */
+ecma_gc_set_object_visited (const ecma_object_ptr_t &object_mp, /**< object */
                             bool is_visited) /**< flag value */
 {
-  JERRY_ASSERT (object_p != NULL);
+  JERRY_ASSERT (object_mp.is_not_null ());
 
+  ecma_object_t *object_p = (ecma_object_t*) object_mp;
   object_p->container = jrt_set_bit_field_value (object_p->container,
                                                  is_visited,
                                                  ECMA_OBJECT_GC_VISITED_POS,
@@ -171,11 +174,11 @@ ecma_gc_set_object_visited (ecma_object_t *object_p, /**< object */
  * Get may_ref_younger_objects flag of the object.
  */
 static bool
-ecma_gc_is_object_may_ref_younger_objects (ecma_object_t *object_p) /**< object */
+ecma_gc_is_object_may_ref_younger_objects (const ecma_object_ptr_t &object_p) /**< object */
 {
-  JERRY_ASSERT (object_p != NULL);
+  JERRY_ASSERT (object_p.is_not_null ());
 
-  return jrt_extract_bit_field (object_p->container,
+  return jrt_extract_bit_field (((ecma_object_t*) object_p)->container,
                                 ECMA_OBJECT_GC_MAY_REF_YOUNGER_OBJECTS_POS,
                                 ECMA_OBJECT_GC_MAY_REF_YOUNGER_OBJECTS_WIDTH);
 } /* ecma_gc_is_object_may_ref_younger_objects */
@@ -184,11 +187,12 @@ ecma_gc_is_object_may_ref_younger_objects (ecma_object_t *object_p) /**< object
  * Set may_ref_younger_objects flag of the object.
  */
 static void
-ecma_gc_set_object_may_ref_younger_objects (ecma_object_t *object_p, /**< object */
+ecma_gc_set_object_may_ref_younger_objects (const ecma_object_ptr_t &object_mp, /**< object */
                                             bool is_may_ref_younger_objects) /**< flag value */
 {
-  JERRY_ASSERT (object_p != NULL);
+  JERRY_ASSERT (object_mp.is_not_null ());
 
+  ecma_object_t *object_p = (ecma_object_t*) object_mp;
   object_p->container = jrt_set_bit_field_value (object_p->container,
                                                  is_may_ref_younger_objects,
                                                  ECMA_OBJECT_GC_MAY_REF_YOUNGER_OBJECTS_POS,
@@ -199,37 +203,41 @@ ecma_gc_set_object_may_ref_younger_objects (ecma_object_t *object_p, /**< object
  * Initialize GC information for the object
  */
 void
-ecma_init_gc_info (ecma_object_t *object_p) /**< object */
+ecma_init_gc_info (const ecma_object_ptr_t& object_mp) /**< object */
 {
-  ecma_gc_set_object_refs (object_p, 1);
+  ecma_gc_set_object_refs (object_mp, 1);
 
-  ecma_gc_set_object_generation (object_p, ECMA_GC_GEN_0);
-  ecma_gc_set_object_next (object_p, ecma_gc_objects_lists[ ECMA_GC_GEN_0 ]);
-  ecma_gc_objects_lists[ ECMA_GC_GEN_0 ] = object_p;
+  ecma_object_ptr_t next_object_mp;
+  next_object_mp = ecma_gc_objects_lists[ ECMA_GC_GEN_0 ];
+
+  ecma_gc_set_object_generation (object_mp, ECMA_GC_GEN_0);
+  ecma_gc_set_object_next (object_mp, next_object_mp);
+  ecma_gc_objects_lists[ ECMA_GC_GEN_0 ] = (ecma_object_t*) object_mp;
 
   /* Should be set to false at the beginning of garbage collection */
-  ecma_gc_set_object_visited (object_p, true);
+  ecma_gc_set_object_visited (object_mp, true);
 
-  ecma_gc_set_object_may_ref_younger_objects (object_p, false);
+  ecma_gc_set_object_may_ref_younger_objects (object_mp, false);
 } /* ecma_init_gc_info */
 
 /**
  * Increase reference counter of an object
  */
 void
-ecma_ref_object (ecma_object_t *object_p) /**< object */
+ecma_ref_object (const ecma_object_ptr_t& object_mp) /**< object */
 {
-  ecma_gc_set_object_refs (object_p, ecma_gc_get_object_refs (object_p) + 1);
+  ecma_gc_set_object_refs (object_mp, ecma_gc_get_object_refs (object_mp) + 1);
 } /* ecma_ref_object */
 
 /**
  * Decrease reference counter of an object
  */
 void
-ecma_deref_object (ecma_object_t *object_p) /**< object */
+ecma_deref_object (const ecma_object_ptr_t& object_mp) /**< object */
 {
-  JERRY_ASSERT(ecma_gc_get_object_refs (object_p) > 0);
-  ecma_gc_set_object_refs (object_p, ecma_gc_get_object_refs (object_p) - 1);
+  JERRY_ASSERT(ecma_gc_get_object_refs (object_mp) > 0);
+
+  ecma_gc_set_object_refs (object_mp, ecma_gc_get_object_refs (object_mp) - 1);
 } /* ecma_deref_object */
 
 /**
@@ -238,7 +246,7 @@ ecma_deref_object (ecma_object_t *object_p) /**< object */
  * is less than generation of object specified by obj_p.
  */
 void
-ecma_gc_update_may_ref_younger_object_flag_by_value (ecma_object_t *obj_p, /**< object */
+ecma_gc_update_may_ref_younger_object_flag_by_value (const ecma_object_ptr_t& obj_mp, /**< object */
                                                      const ecma_value_t& value) /**< value */
 {
   if (!ecma_is_value_object (value))
@@ -246,25 +254,26 @@ ecma_gc_update_may_ref_younger_object_flag_by_value (ecma_object_t *obj_p, /**<
     return;
   }
 
-  ecma_object_t *ref_obj_p = ecma_get_object_from_value (value);
-  JERRY_ASSERT(ref_obj_p != NULL);
+  ecma_object_ptr_t ref_obj_p;
+  ecma_get_object_from_value (ref_obj_p, value);
+  JERRY_ASSERT(ref_obj_p.is_not_null ());
 
-  ecma_gc_update_may_ref_younger_object_flag_by_object (obj_p, ref_obj_p);
+  ecma_gc_update_may_ref_younger_object_flag_by_object (obj_mp, ref_obj_p);
 } /* ecma_gc_update_may_ref_younger_object_flag_by_value */
 
 void
-ecma_gc_update_may_ref_younger_object_flag_by_object (ecma_object_t *obj_p, /**< object */
-                                                      ecma_object_t *ref_obj_p) /**< referenced object
-                                                                                     or NULL */
+ecma_gc_update_may_ref_younger_object_flag_by_object (const ecma_object_ptr_t& obj_mp, /**< object */
+                                                      const ecma_object_ptr_t& ref_obj_mp) /**< referenced object
+                                                                                            *   or NULL */
 {
-  if (ref_obj_p == NULL)
+  if (ref_obj_mp.is_null ())
   {
     return;
   }
 
-  if (ecma_gc_get_object_generation (ref_obj_p) < ecma_gc_get_object_generation (obj_p))
+  if (ecma_gc_get_object_generation (ref_obj_mp) < ecma_gc_get_object_generation (obj_mp))
   {
-    ecma_gc_set_object_may_ref_younger_objects (obj_p, true);
+    ecma_gc_set_object_may_ref_younger_objects (obj_mp, true);
   }
 } /* ecma_gc_update_may_ref_younger_object_flag_by_object */
 
@@ -274,7 +283,10 @@ ecma_gc_update_may_ref_younger_object_flag_by_object (ecma_object_t *obj_p, /**<
 void
 ecma_gc_init (void)
 {
-  __memset (ecma_gc_objects_lists, 0, sizeof (ecma_gc_objects_lists));
+  for (uint32_t i = 0; i < ECMA_GC_GEN_COUNT; i++)
+  {
+    ecma_gc_objects_lists [i] = NULL;
+  }
 } /* ecma_gc_init */
 
 /**
@@ -282,12 +294,12 @@ ecma_gc_init (void)
  * if referenced object's generation is less or equal to maximum_gen_to_traverse.
  */
 void
-ecma_gc_mark (ecma_object_t *object_p, /**< start object */
+ecma_gc_mark (const ecma_object_ptr_t& object_p, /**< start object */
               ecma_gc_gen_t maximum_gen_to_traverse) /**< start recursive traverse
                                                           if referenced object generation
                                                           is less or equal to maximum_gen_to_traverse */
 {
-  JERRY_ASSERT(object_p != NULL);
+  JERRY_ASSERT(object_p.is_not_null ());
 
   ecma_gc_set_object_visited (object_p, true);
 
@@ -296,8 +308,9 @@ ecma_gc_mark (ecma_object_t *object_p, /**< start object */
 
   if (ecma_is_lexical_environment (object_p))
   {
-    ecma_object_t *lex_env_p = ecma_get_lex_env_outer_reference (object_p);
-    if (lex_env_p != NULL)
+    ecma_object_ptr_t lex_env_p (ecma_pointer_t::is_linked_arg::not_linked);
+    ecma_get_lex_env_outer_reference (lex_env_p, object_p);
+    if (lex_env_p.is_not_null ())
     {
       if (ecma_gc_get_object_generation (lex_env_p) <= maximum_gen_to_traverse)
       {
@@ -315,7 +328,8 @@ ecma_gc_mark (ecma_object_t *object_p, /**< start object */
 
     if (ecma_get_lex_env_type (object_p) == ECMA_LEXICAL_ENVIRONMENT_OBJECTBOUND)
     {
-      ecma_object_t *binding_object_p = ecma_get_lex_env_binding_object (object_p);
+      ecma_object_ptr_t binding_object_p;
+      ecma_get_lex_env_binding_object (binding_object_p, object_p);
       if (ecma_gc_get_object_generation (binding_object_p) <= maximum_gen_to_traverse)
       {
         if (!ecma_gc_is_object_visited (binding_object_p))
@@ -334,8 +348,9 @@ ecma_gc_mark (ecma_object_t *object_p, /**< start object */
   }
   else
   {
-    ecma_object_t *proto_p = ecma_get_object_prototype (object_p);
-    if (proto_p != NULL)
+    ecma_object_ptr_t proto_p (ecma_pointer_t::is_linked_arg::not_linked);
+    ecma_get_object_prototype (proto_p, object_p);
+    if (proto_p.is_not_null ())
     {
       if (ecma_gc_get_object_generation (proto_p) <= maximum_gen_to_traverse)
       {
@@ -370,7 +385,8 @@ ecma_gc_mark (ecma_object_t *object_p, /**< start object */
 
           if (ecma_is_value_object (value))
           {
-            ecma_object_t *value_obj_p = ecma_get_object_from_value (value);
+            ecma_object_ptr_t value_obj_p;
+            ecma_get_object_from_value (value_obj_p, value);
 
             if (ecma_gc_get_object_generation (value_obj_p) <= maximum_gen_to_traverse)
             {
@@ -391,12 +407,11 @@ ecma_gc_mark (ecma_object_t *object_p, /**< start object */
 
         case ECMA_PROPERTY_NAMEDACCESSOR:
         {
-          ecma_object_t *getter_obj_p = ECMA_GET_POINTER (ecma_object_t,
-                                                          property_p->u.named_accessor_property.get_p);
-          ecma_object_t *setter_obj_p = ECMA_GET_POINTER (ecma_object_t,
-                                                          property_p->u.named_accessor_property.set_p);
+          ecma_object_ptr_t getter_obj_p, setter_obj_p;
+          getter_obj_p.unpack_from (property_p->u.named_accessor_property.get_p, true);
+          setter_obj_p.unpack_from (property_p->u.named_accessor_property.set_p, true);
 
-          if (getter_obj_p != NULL)
+          if (getter_obj_p.is_not_null ())
           {
             if (ecma_gc_get_object_generation (getter_obj_p) <= maximum_gen_to_traverse)
             {
@@ -412,7 +427,7 @@ ecma_gc_mark (ecma_object_t *object_p, /**< start object */
             }
           }
 
-          if (setter_obj_p != NULL)
+          if (setter_obj_p.is_not_null ())
           {
             if (ecma_gc_get_object_generation (setter_obj_p) <= maximum_gen_to_traverse)
             {
@@ -471,7 +486,8 @@ ecma_gc_mark (ecma_object_t *object_p, /**< start object */
             case ECMA_INTERNAL_PROPERTY_SCOPE: /* a lexical environment */
             case ECMA_INTERNAL_PROPERTY_PARAMETERS_MAP: /* an object */
             {
-              ecma_object_t *obj_p = ECMA_GET_NON_NULL_POINTER(ecma_object_t, property_value);
+              ecma_object_ptr_t obj_p;
+              obj_p.unpack_from (property_value);
 
               if (ecma_gc_get_object_generation (obj_p) <= maximum_gen_to_traverse)
               {
@@ -506,11 +522,11 @@ ecma_gc_mark (ecma_object_t *object_p, /**< start object */
  * Free specified object
  */
 void
-ecma_gc_sweep (ecma_object_t *object_p) /**< object to free */
+ecma_gc_sweep (ecma_object_ptr_t &object_p) /**< object to free */
 {
-  JERRY_ASSERT(object_p != NULL
-               && !ecma_gc_is_object_visited (object_p)
-               && ecma_gc_get_object_refs (object_p) == 0);
+  JERRY_ASSERT (object_p.is_not_null ()
+                && !ecma_gc_is_object_visited (object_p)
+                && ecma_gc_get_object_refs (object_p) == 0);
 
   if (!ecma_is_lexical_environment (object_p) ||
       ecma_get_lex_env_type (object_p) != ECMA_LEXICAL_ENVIRONMENT_OBJECTBOUND)
@@ -540,9 +556,10 @@ ecma_gc_run (ecma_gc_gen_t max_gen_to_collect) /**< maximum generation to run co
   /* clearing visited flags for all objects of generations to be processed */
   for (ecma_gc_gen_t gen_id = ECMA_GC_GEN_0; gen_id <= max_gen_to_collect; gen_id = (ecma_gc_gen_t) (gen_id + 1))
   {
-    for (ecma_object_t *obj_iter_p = ecma_gc_objects_lists[ gen_id ];
-         obj_iter_p != NULL;
-         obj_iter_p = ecma_gc_get_object_next (obj_iter_p))
+    ecma_object_ptr_t obj_iter_p, obj_iter_next_p;
+    for (obj_iter_p = ecma_gc_objects_lists[ gen_id ];
+         obj_iter_p.is_not_null ();
+         ecma_gc_get_object_next (obj_iter_next_p, obj_iter_p), obj_iter_p = obj_iter_next_p)
     {
       ecma_gc_set_object_visited (obj_iter_p, false);
     }
@@ -552,9 +569,11 @@ ecma_gc_run (ecma_gc_gen_t max_gen_to_collect) /**< maximum generation to run co
    * start recursive marking traverse from the object */
   for (ecma_gc_gen_t gen_id = ECMA_GC_GEN_0; gen_id <= max_gen_to_collect; gen_id = (ecma_gc_gen_t) (gen_id + 1))
   {
-    for (ecma_object_t *obj_iter_p = ecma_gc_objects_lists[ gen_id ];
-         obj_iter_p != NULL;
-         obj_iter_p = ecma_gc_get_object_next (obj_iter_p))
+    ecma_object_ptr_t obj_iter_p, obj_iter_next_p;
+
+    for (obj_iter_p = ecma_gc_objects_lists[ gen_id ];
+         obj_iter_p.is_not_null ();
+         ecma_gc_get_object_next (obj_iter_next_p, obj_iter_p), obj_iter_p = obj_iter_next_p)
     {
       if (ecma_gc_get_object_refs (obj_iter_p) > 0
           && !ecma_gc_is_object_visited (obj_iter_p))
@@ -577,7 +596,8 @@ ecma_gc_run (ecma_gc_gen_t max_gen_to_collect) /**< maximum generation to run co
 
       if (ecma_is_value_object (reg_value))
       {
-        ecma_object_t *obj_p = ecma_get_object_from_value (reg_value);
+        ecma_object_ptr_t obj_p;
+        ecma_get_object_from_value (obj_p, reg_value);
 
         if (!ecma_gc_is_object_visited (obj_p))
         {
@@ -594,9 +614,11 @@ ecma_gc_run (ecma_gc_gen_t max_gen_to_collect) /**< maximum generation to run co
        gen_id < ECMA_GC_GEN_COUNT;
        gen_id = (ecma_gc_gen_t) (gen_id + 1))
   {
-    for (ecma_object_t *obj_iter_p = ecma_gc_objects_lists[ gen_id ];
-         obj_iter_p != NULL;
-         obj_iter_p = ecma_gc_get_object_next (obj_iter_p))
+    ecma_object_ptr_t obj_iter_p, obj_iter_next_p;
+
+    for (obj_iter_p = ecma_gc_objects_lists[ gen_id ];
+         obj_iter_p.is_not_null ();
+         ecma_gc_get_object_next (obj_iter_next_p, obj_iter_p), obj_iter_p = obj_iter_next_p)
     {
       if (ecma_gc_is_object_may_ref_younger_objects (obj_iter_p))
       {
@@ -614,33 +636,31 @@ ecma_gc_run (ecma_gc_gen_t max_gen_to_collect) /**< maximum generation to run co
   }
 
   JERRY_ASSERT (max_gen_to_collect <= ECMA_GC_GEN_COUNT);
-  ecma_object_t *gen_last_obj_p[ ECMA_GC_GEN_COUNT ];
-#ifndef JERRY_NDEBUG
-  __memset (gen_last_obj_p, 0, sizeof (gen_last_obj_p));
-#endif /* !JERRY_NDEBUG */
+  ecma_object_ptr_t gen_last_obj_p[ ECMA_GC_GEN_COUNT ];
 
   for (ecma_gc_gen_t gen_id = ECMA_GC_GEN_0; gen_id <= max_gen_to_collect; gen_id = (ecma_gc_gen_t) (gen_id + 1))
   {
-    ecma_object_t *obj_prev_p = NULL;
+    ecma_object_ptr_t obj_prev_p;
 
-    for (ecma_object_t *obj_iter_p = ecma_gc_objects_lists[ gen_id ],
-         *obj_next_p;
-         obj_iter_p != NULL;
-         obj_iter_p = obj_next_p)
+    ecma_object_ptr_t obj_iter_p, obj_iter_next_p;
+
+    for (obj_iter_p = ecma_gc_objects_lists[ gen_id ];
+         obj_iter_p.is_not_null ();
+         obj_iter_p = obj_iter_next_p)
     {
-      obj_next_p = ecma_gc_get_object_next (obj_iter_p);
+      ecma_gc_get_object_next (obj_iter_next_p, obj_iter_p);
 
       if (!ecma_gc_is_object_visited (obj_iter_p))
       {
         ecma_gc_sweep (obj_iter_p);
 
-        if (likely (obj_prev_p != NULL))
+        if (likely (obj_prev_p.is_not_null ()))
         {
-          ecma_gc_set_object_next (obj_prev_p, obj_next_p);
+          ecma_gc_set_object_next (obj_prev_p, obj_iter_next_p);
         }
         else
         {
-          ecma_gc_objects_lists[ gen_id ] = obj_next_p;
+          ecma_gc_objects_lists[ gen_id ] = (ecma_object_t*) obj_iter_next_p;
         }
       }
       else
@@ -666,9 +686,11 @@ ecma_gc_run (ecma_gc_gen_t max_gen_to_collect) /**< maximum generation to run co
   }
 
   /* promoting to next generation */
-  if (gen_last_obj_p[ gen_to_promote ] != NULL)
+  if (gen_last_obj_p[ gen_to_promote ].is_not_null ())
   {
-    ecma_gc_set_object_next (gen_last_obj_p [gen_to_promote], ecma_gc_objects_lists[ gen_to_promote + 1 ]);
+    ecma_object_ptr_t next_object_mp;
+    next_object_mp = ecma_gc_objects_lists[ gen_to_promote + 1 ];
+    ecma_gc_set_object_next (gen_last_obj_p [gen_to_promote], next_object_mp);
     ecma_gc_objects_lists[ gen_to_promote + 1 ] = ecma_gc_objects_lists[ gen_to_promote ];
     ecma_gc_objects_lists[ gen_to_promote ] = NULL;
   }
@@ -686,9 +708,10 @@ ecma_gc_run (ecma_gc_gen_t max_gen_to_collect) /**< maximum generation to run co
        gen_id < ECMA_GC_GEN_COUNT;
        gen_id = (ecma_gc_gen_t) (gen_id + 1))
   {
-    for (ecma_object_t *obj_iter_p = ecma_gc_objects_lists[ gen_id ];
-         obj_iter_p != NULL;
-         obj_iter_p = ecma_gc_get_object_next (obj_iter_p))
+    ecma_object_ptr_t obj_iter_p, obj_iter_next_p;
+    for (obj_iter_p = ecma_gc_objects_lists[ gen_id ];
+         obj_iter_p.is_not_null ();
+         ecma_gc_get_object_next (obj_iter_next_p, obj_iter_p), obj_iter_p = obj_iter_next_p)
     {
       JERRY_ASSERT(ecma_gc_get_object_generation (obj_iter_p) == gen_id);
     }
diff --git a/src/libecmaobjects/ecma-gc.h b/src/libecmaobjects/ecma-gc.h
index de0731032..a79d8703c 100644
--- a/src/libecmaobjects/ecma-gc.h
+++ b/src/libecmaobjects/ecma-gc.h
@@ -39,11 +39,15 @@ typedef enum
 } ecma_gc_gen_t;
 
 extern void ecma_gc_init (void);
-extern void ecma_init_gc_info (ecma_object_t *object_p);
-extern void ecma_ref_object (ecma_object_t *object_p);
-extern void ecma_deref_object (ecma_object_t *object_p);
-extern void ecma_gc_update_may_ref_younger_object_flag_by_value (ecma_object_t *obj_p, const ecma_value_t& value);
-extern void ecma_gc_update_may_ref_younger_object_flag_by_object (ecma_object_t *obj_p, ecma_object_t *ref_obj_p);
+extern void ecma_init_gc_info (const ecma_object_ptr_t& object_p);
+extern void ecma_ref_object (const ecma_object_ptr_t& object_p);
+extern void ecma_deref_object (const ecma_object_ptr_t& object_p);
+extern void
+ecma_gc_update_may_ref_younger_object_flag_by_value (const ecma_object_ptr_t& obj_p,
+                                                     const ecma_value_t& value);
+extern void
+ecma_gc_update_may_ref_younger_object_flag_by_object (const ecma_object_ptr_t& obj_p,
+                                                      const ecma_object_ptr_t& ref_obj_p);
 extern void ecma_gc_run (ecma_gc_gen_t max_gen_to_collect);
 extern void ecma_try_to_give_back_some_memory (mem_try_give_memory_back_severity_t severity);
 
diff --git a/src/libecmaobjects/ecma-globals.h b/src/libecmaobjects/ecma-globals.h
index 74f2dd4f7..dd2437687 100644
--- a/src/libecmaobjects/ecma-globals.h
+++ b/src/libecmaobjects/ecma-globals.h
@@ -758,14 +758,42 @@ typedef struct
 class ecma_pointer_t
 {
   public:
+    /**
+     * Argument specifying should the pointer
+     * be linked into managed pointers list
+     */
+    enum class is_linked_arg
+    {
+      linked, /**< perform link */
+      not_linked /**< do not perform link */
+    };
+
     /* Constructors */
     __attribute_always_inline__
-    ecma_pointer_t () : _ptr (NULL) {}
+    ecma_pointer_t () : ecma_pointer_t (is_linked_arg::linked) { }
+
+    __attribute_always_inline__
+    ecma_pointer_t (is_linked_arg is_linked) /**< should the pointer
+                                              *   be linked into managed
+                                              *   pointers list? */
+      : _ptr (NULL)
+    {
+      if (is_linked == is_linked_arg::linked)
+      {
+        // TODO
+      }
+    }
 
     ecma_pointer_t (const ecma_pointer_t&) = delete;
     ecma_pointer_t (ecma_pointer_t&) = delete;
     ecma_pointer_t (ecma_pointer_t&&) = delete;
 
+    /* Destructor */
+    ~ecma_pointer_t ()
+    {
+      // TODO
+    }
+
     /* Getter */
     template<typename T>
     __attribute_always_inline__
@@ -774,22 +802,6 @@ class ecma_pointer_t
       return static_cast<T*> (_ptr);
     }
 
-    /* Member access */
-    template<typename T>
-    __attribute_always_inline__
-    T* operator -> () const
-    {
-      return (T*) _ptr;
-    }
-
-    /* Dereference */
-    template<typename T>
-    __attribute_always_inline__
-    T operator * () const
-    {
-      return *static_cast<T*> (_ptr);
-    }
-
     /* Assignment operators */
     template<typename T>
     __attribute_always_inline__
@@ -819,40 +831,84 @@ class ecma_pointer_t
       return *this;
     }
 
-    ecma_pointer_t& operator = (ecma_pointer_t &) = delete;
+    __attribute_always_inline__
+    ecma_pointer_t& operator = (ecma_pointer_t& ptr) /**< managed pointer
+                                                      *   to take value from */
+    {
+      const ecma_pointer_t &ptr_const = ptr;
+      *this = ptr_const;
+
+      return *this;
+    }
+
     ecma_pointer_t& operator = (ecma_pointer_t &&) = delete;
 
+    /* Comparison */
+    __attribute_always_inline__
+    bool operator == (const ecma_pointer_t &ptr) const /**< raw pointer */
+    {
+      return (_ptr == ptr._ptr);
+    }
+
+    __attribute_always_inline__
+    bool is_null (void) const
+    {
+      return (_ptr == NULL);
+    }
+
+    __attribute_always_inline__
+    bool is_not_null (void) const
+    {
+      return (_ptr != NULL);
+    }
+
     /* Packing to compressed pointer */
     __attribute_always_inline__
-    void pack_to (uintptr_t& compressed_pointer) const /**< reference to compressed pointer */
+    void pack_to (uintptr_t& compressed_pointer, /**< reference to compressed pointer */
+                  bool may_be_null = false) const /**< flag indicating the pointer can be NULL */
     {
-      ECMA_SET_NON_NULL_POINTER (compressed_pointer, _ptr);
+      void *ptr = _ptr;
+
+      if (may_be_null)
+      {
+        ECMA_SET_POINTER (compressed_pointer, ptr);
+      }
+      else
+      {
+        ECMA_SET_NON_NULL_POINTER (compressed_pointer, ptr);
+      }
     }
 
     /* Unpacking from compressed pointer */
     __attribute_always_inline__
-    void unpack_from (uintptr_t compressed_pointer) /**< compressed pointer */
+    void unpack_from (uintptr_t compressed_pointer, /**< compressed pointer */
+                      bool may_be_null = false) /**< flag indicating the pointer can be NULL */
     {
-      _ptr = ECMA_GET_NON_NULL_POINTER (void, compressed_pointer);
+      if (may_be_null)
+      {
+        _ptr = ECMA_GET_POINTER (void, compressed_pointer);
+      }
+      else
+      {
+        _ptr = ECMA_GET_NON_NULL_POINTER (void, compressed_pointer);
+      }
     }
-
   protected: /* accessible to ecma_pointer_t */
     void *_ptr; /* pointer storage */
 };
 
-#define ECMA_DECLARE_POINTER_OPERATORS_FOR(type) \
-  template ecma_pointer_t::operator type* () const; \
-  template type* ecma_pointer_t::operator -> () const; \
-  template type ecma_pointer_t::operator * () const; \
-  template ecma_pointer_t& ecma_pointer_t::operator = (type *); \
-  template ecma_pointer_t& ecma_pointer_t::operator = (const type &);
+#define ECMA_DECLARE_PTR_TYPE_AND_POINTER_OPERATORS_FOR(type_name) \
+  typedef ecma_pointer_t ecma_ ## type_name ## _ptr_t; \
+  template ecma_pointer_t::operator ecma_ ## type_name ## _t * () const; \
+  template ecma_pointer_t& ecma_pointer_t::operator = (ecma_ ## type_name ## _t *); \
+  template ecma_pointer_t& ecma_pointer_t::operator = (const ecma_ ## type_name ## _t &);
 
 /**
  * ECMA managed pointers' operators explicit instantiation
  */
-ECMA_DECLARE_POINTER_OPERATORS_FOR (ecma_number_t)
-ECMA_DECLARE_POINTER_OPERATORS_FOR (ecma_string_t)
-ECMA_DECLARE_POINTER_OPERATORS_FOR (ecma_object_t)
+ECMA_DECLARE_PTR_TYPE_AND_POINTER_OPERATORS_FOR (number)
+ECMA_DECLARE_PTR_TYPE_AND_POINTER_OPERATORS_FOR (string)
+ECMA_DECLARE_PTR_TYPE_AND_POINTER_OPERATORS_FOR (object)
 
 /**
  * @}
diff --git a/src/libecmaobjects/ecma-helpers.c b/src/libecmaobjects/ecma-helpers.c
index d2111db8f..b8c91bd89 100644
--- a/src/libecmaobjects/ecma-helpers.c
+++ b/src/libecmaobjects/ecma-helpers.c
@@ -36,14 +36,17 @@
  *
  * @return pointer to the object's descriptor
  */
-ecma_object_t*
-ecma_create_object (ecma_object_t *prototype_object_p, /**< pointer to prototybe of the object (or NULL) */
+void
+ecma_create_object (ecma_object_ptr_t &object_mp, /**< out: object pointer */
+                    const ecma_object_ptr_t& prototype_object_p, /**< pointer to prototybe of the object (or NULL) */
                     bool is_extensible, /**< value of extensible attribute */
                     ecma_object_type_t type) /**< object type */
 {
-  ecma_object_t *object_p = ecma_alloc_object ();
+  ecma_alloc_object (object_mp);
 
-  ecma_init_gc_info (object_p);
+  ecma_init_gc_info (object_mp);
+
+  ecma_object_t *object_p = (ecma_object_t*) object_mp;
 
   object_p->container = jrt_set_bit_field_value (object_p->container,
                                                  ECMA_NULL_POINTER,
@@ -62,17 +65,15 @@ ecma_create_object (ecma_object_t *prototype_object_p, /**< pointer to prototybe
                                                  ECMA_OBJECT_OBJ_TYPE_POS,
                                                  ECMA_OBJECT_OBJ_TYPE_WIDTH);
 
-  uint64_t prototype_object_cp;
-  ECMA_SET_POINTER (prototype_object_cp, prototype_object_p);
+  uintptr_t prototype_object_cp;
+  prototype_object_p.pack_to (prototype_object_cp, true);
 
   object_p->container = jrt_set_bit_field_value (object_p->container,
                                                  prototype_object_cp,
                                                  ECMA_OBJECT_OBJ_PROTOTYPE_OBJECT_CP_POS,
                                                  ECMA_OBJECT_OBJ_PROTOTYPE_OBJECT_CP_WIDTH);
 
-  ecma_set_object_is_builtin (object_p, false);
-
-  return object_p;
+  ecma_set_object_is_builtin (object_mp, false);
 } /* ecma_create_object */
 
 /**
@@ -85,12 +86,15 @@ ecma_create_object (ecma_object_t *prototype_object_p, /**< pointer to prototybe
  *
  * @return pointer to the descriptor of lexical environment
  */
-ecma_object_t*
-ecma_create_decl_lex_env (ecma_object_t *outer_lexical_environment_p) /**< outer lexical environment */
+void
+ecma_create_decl_lex_env (ecma_object_ptr_t &new_lexical_environment_mp, /**< out: lexical environment pointer */
+                          const ecma_object_ptr_t& outer_lexical_environment_p) /**< outer lexical environment */
 {
-  ecma_object_t *new_lexical_environment_p = ecma_alloc_object ();
+  ecma_alloc_object (new_lexical_environment_mp);
 
-  ecma_init_gc_info (new_lexical_environment_p);
+  ecma_init_gc_info (new_lexical_environment_mp);
+
+  ecma_object_t *new_lexical_environment_p = (ecma_object_t*) new_lexical_environment_mp;
 
   new_lexical_environment_p->container = jrt_set_bit_field_value (new_lexical_environment_p->container,
                                                                   ECMA_NULL_POINTER,
@@ -106,14 +110,13 @@ ecma_create_decl_lex_env (ecma_object_t *outer_lexical_environment_p) /**< outer
                                                                   ECMA_OBJECT_LEX_ENV_TYPE_POS,
                                                                   ECMA_OBJECT_LEX_ENV_TYPE_WIDTH);
 
-  uint64_t outer_reference_cp;
-  ECMA_SET_POINTER (outer_reference_cp, outer_lexical_environment_p);
+  uintptr_t outer_reference_cp;
+  outer_lexical_environment_p.pack_to (outer_reference_cp, true);
+
   new_lexical_environment_p->container = jrt_set_bit_field_value (new_lexical_environment_p->container,
                                                                   outer_reference_cp,
                                                                   ECMA_OBJECT_LEX_ENV_OUTER_REFERENCE_CP_POS,
                                                                   ECMA_OBJECT_LEX_ENV_OUTER_REFERENCE_CP_WIDTH);
-
-  return new_lexical_environment_p;
 } /* ecma_create_decl_lex_env */
 
 /**
@@ -126,17 +129,20 @@ ecma_create_decl_lex_env (ecma_object_t *outer_lexical_environment_p) /**< outer
  *
  * @return pointer to the descriptor of lexical environment
  */
-ecma_object_t*
-ecma_create_object_lex_env (ecma_object_t *outer_lexical_environment_p, /**< outer lexical environment */
-                            ecma_object_t *binding_obj_p, /**< binding object */
+void
+ecma_create_object_lex_env (ecma_object_ptr_t &new_lexical_environment_mp, /**< out: lexical environment pointer */
+                            const ecma_object_ptr_t& outer_lexical_environment_p, /**< outer lexical environment */
+                            const ecma_object_ptr_t& binding_obj_p, /**< binding object */
                             bool provide_this) /**< provideThis flag */
 {
-  JERRY_ASSERT(binding_obj_p != NULL
+  JERRY_ASSERT(binding_obj_p.is_not_null ()
                && !ecma_is_lexical_environment (binding_obj_p));
 
-  ecma_object_t *new_lexical_environment_p = ecma_alloc_object ();
+  ecma_alloc_object (new_lexical_environment_mp);
 
-  ecma_init_gc_info (new_lexical_environment_p);
+  ecma_init_gc_info (new_lexical_environment_mp);
+
+  ecma_object_t *new_lexical_environment_p = (ecma_object_t*) new_lexical_environment_mp;
 
   new_lexical_environment_p->container = jrt_set_bit_field_value (new_lexical_environment_p->container,
                                                                   true,
@@ -148,8 +154,8 @@ ecma_create_object_lex_env (ecma_object_t *outer_lexical_environment_p, /**< out
                                                                   ECMA_OBJECT_LEX_ENV_TYPE_POS,
                                                                   ECMA_OBJECT_LEX_ENV_TYPE_WIDTH);
 
-  uint64_t outer_reference_cp;
-  ECMA_SET_POINTER (outer_reference_cp, outer_lexical_environment_p);
+  uintptr_t outer_reference_cp;
+  outer_lexical_environment_p.pack_to (outer_reference_cp, true);
   new_lexical_environment_p->container = jrt_set_bit_field_value (new_lexical_environment_p->container,
                                                                   outer_reference_cp,
                                                                   ECMA_OBJECT_LEX_ENV_OUTER_REFERENCE_CP_POS,
@@ -160,24 +166,24 @@ ecma_create_object_lex_env (ecma_object_t *outer_lexical_environment_p, /**< out
                                                                   ECMA_OBJECT_LEX_ENV_PROVIDE_THIS_POS,
                                                                   ECMA_OBJECT_LEX_ENV_PROVIDE_THIS_WIDTH);
 
-  uint64_t bound_object_cp;
-  ECMA_SET_NON_NULL_POINTER (bound_object_cp, binding_obj_p);
+  uintptr_t bound_object_cp;
+  binding_obj_p.pack_to (bound_object_cp);
   new_lexical_environment_p->container = jrt_set_bit_field_value (new_lexical_environment_p->container,
                                                                   bound_object_cp,
                                                                   ECMA_OBJECT_PROPERTIES_OR_BOUND_OBJECT_CP_POS,
                                                                   ECMA_OBJECT_PROPERTIES_OR_BOUND_OBJECT_CP_WIDTH);
-  ecma_gc_update_may_ref_younger_object_flag_by_object (new_lexical_environment_p, binding_obj_p);
-
-  return new_lexical_environment_p;
+  ecma_gc_update_may_ref_younger_object_flag_by_object (new_lexical_environment_mp, binding_obj_p);
 } /* ecma_create_object_lex_env */
 
 /**
  * Check if the object is lexical environment.
  */
 bool __attribute_pure__
-ecma_is_lexical_environment (const ecma_object_t *object_p) /**< object or lexical environment */
+ecma_is_lexical_environment (const ecma_object_ptr_t& object_mp) /**< object or lexical environment */
 {
-  JERRY_ASSERT (object_p != NULL);
+  JERRY_ASSERT (object_mp.is_not_null ());
+
+  ecma_object_t *object_p = (ecma_object_t*) object_mp;
 
   return jrt_extract_bit_field (object_p->container,
                                 ECMA_OBJECT_IS_LEXICAL_ENVIRONMENT_POS,
@@ -188,10 +194,12 @@ ecma_is_lexical_environment (const ecma_object_t *object_p) /**< object or lexic
  * Get value of [[Extensible]] object's internal property.
  */
 bool __attribute_pure__
-ecma_get_object_extensible (const ecma_object_t *object_p) /**< object */
+ecma_get_object_extensible (const ecma_object_ptr_t& object_mp) /**< object */
 {
-  JERRY_ASSERT (object_p != NULL);
-  JERRY_ASSERT (!ecma_is_lexical_environment (object_p));
+  JERRY_ASSERT (object_mp.is_not_null ());
+  JERRY_ASSERT (!ecma_is_lexical_environment (object_mp));
+
+  ecma_object_t *object_p = (ecma_object_t*) object_mp;
 
   return jrt_extract_bit_field (object_p->container,
                                 ECMA_OBJECT_OBJ_EXTENSIBLE_POS,
@@ -202,11 +210,13 @@ ecma_get_object_extensible (const ecma_object_t *object_p) /**< object */
  * Set value of [[Extensible]] object's internal property.
  */
 void
-ecma_set_object_extensible (ecma_object_t *object_p, /**< object */
+ecma_set_object_extensible (const ecma_object_ptr_t& object_mp, /**< object */
                             bool is_extensible) /**< value of [[Extensible]] */
 {
-  JERRY_ASSERT (object_p != NULL);
-  JERRY_ASSERT (!ecma_is_lexical_environment (object_p));
+  JERRY_ASSERT (object_mp.is_not_null ());
+  JERRY_ASSERT (!ecma_is_lexical_environment (object_mp));
+
+  ecma_object_t *object_p = (ecma_object_t*) object_mp;
 
   object_p->container = jrt_set_bit_field_value (object_p->container,
                                                  is_extensible,
@@ -218,10 +228,12 @@ ecma_set_object_extensible (ecma_object_t *object_p, /**< object */
  * Get object's internal implementation-defined type.
  */
 ecma_object_type_t __attribute_pure__
-ecma_get_object_type (const ecma_object_t *object_p) /**< object */
+ecma_get_object_type (const ecma_object_ptr_t& object_mp) /**< object */
 {
-  JERRY_ASSERT (object_p != NULL);
-  JERRY_ASSERT (!ecma_is_lexical_environment (object_p));
+  JERRY_ASSERT (object_mp.is_not_null ());
+  JERRY_ASSERT (!ecma_is_lexical_environment (object_mp));
+
+  ecma_object_t *object_p = (ecma_object_t*) object_mp;
 
   return (ecma_object_type_t) jrt_extract_bit_field (object_p->container,
                                                      ECMA_OBJECT_OBJ_TYPE_POS,
@@ -232,11 +244,13 @@ ecma_get_object_type (const ecma_object_t *object_p) /**< object */
  * Set object's internal implementation-defined type.
  */
 void
-ecma_set_object_type (ecma_object_t *object_p, /**< object */
+ecma_set_object_type (const ecma_object_ptr_t& object_mp, /**< object */
                       ecma_object_type_t type) /**< type */
 {
-  JERRY_ASSERT (object_p != NULL);
-  JERRY_ASSERT (!ecma_is_lexical_environment (object_p));
+  JERRY_ASSERT (object_mp.is_not_null ());
+  JERRY_ASSERT (!ecma_is_lexical_environment (object_mp));
+
+  ecma_object_t *object_p = (ecma_object_t*) object_mp;
 
   object_p->container = jrt_set_bit_field_value (object_p->container,
                                                  type,
@@ -247,18 +261,20 @@ ecma_set_object_type (ecma_object_t *object_p, /**< object */
 /**
  * Get object's prototype.
  */
-ecma_object_t* __attribute_pure__
-ecma_get_object_prototype (const ecma_object_t *object_p) /**< object */
+void
+ecma_get_object_prototype (ecma_object_ptr_t &ret_val, /**< out: object pointer */
+                           const ecma_object_ptr_t& object_mp) /**< object */
 {
-  JERRY_ASSERT (object_p != NULL);
-  JERRY_ASSERT (!ecma_is_lexical_environment (object_p));
+  JERRY_ASSERT (object_mp.is_not_null ());
+  JERRY_ASSERT (!ecma_is_lexical_environment (object_mp));
+
+  ecma_object_t *object_p = (ecma_object_t*) object_mp;
 
   JERRY_ASSERT (sizeof (uintptr_t) * JERRY_BITSINBYTE >= ECMA_OBJECT_OBJ_PROTOTYPE_OBJECT_CP_WIDTH);
   uintptr_t prototype_object_cp = (uintptr_t) jrt_extract_bit_field (object_p->container,
                                                                      ECMA_OBJECT_OBJ_PROTOTYPE_OBJECT_CP_POS,
                                                                      ECMA_OBJECT_OBJ_PROTOTYPE_OBJECT_CP_WIDTH);
-  return ECMA_GET_POINTER (ecma_object_t,
-                           prototype_object_cp);
+  ret_val.unpack_from (prototype_object_cp, true);
 } /* ecma_get_object_prototype */
 
 /**
@@ -267,16 +283,18 @@ ecma_get_object_prototype (const ecma_object_t *object_p) /**< object */
  * @return true / false
  */
 bool __attribute_pure__
-ecma_get_object_is_builtin (const ecma_object_t *object_p) /**< object */
+ecma_get_object_is_builtin (const ecma_object_ptr_t& object_mp) /**< object */
 {
-  JERRY_ASSERT (object_p != NULL);
-  JERRY_ASSERT (!ecma_is_lexical_environment (object_p));
+  JERRY_ASSERT (object_mp.is_not_null ());
+  JERRY_ASSERT (!ecma_is_lexical_environment (object_mp));
 
   const uint32_t offset = ECMA_OBJECT_OBJ_IS_BUILTIN_POS;
   const uint32_t width = ECMA_OBJECT_OBJ_IS_BUILTIN_WIDTH;
 
   JERRY_ASSERT (sizeof (uintptr_t) * JERRY_BITSINBYTE >= width);
 
+  ecma_object_t *object_p = (ecma_object_t*) object_mp;
+
   uintptr_t flag_value = (uintptr_t) jrt_extract_bit_field (object_p->container,
                                                             offset,
                                                             width);
@@ -288,15 +306,17 @@ ecma_get_object_is_builtin (const ecma_object_t *object_p) /**< object */
  * Set flag indicating whether the object is a built-in object
  */
 void
-ecma_set_object_is_builtin (ecma_object_t *object_p, /**< object */
+ecma_set_object_is_builtin (const ecma_object_ptr_t& object_mp, /**< object */
                             bool is_builtin) /**< value of flag */
 {
-  JERRY_ASSERT (object_p != NULL);
-  JERRY_ASSERT (!ecma_is_lexical_environment (object_p));
+  JERRY_ASSERT (object_mp.is_not_null ());
+  JERRY_ASSERT (!ecma_is_lexical_environment (object_mp));
 
   const uint32_t offset = ECMA_OBJECT_OBJ_IS_BUILTIN_POS;
   const uint32_t width = ECMA_OBJECT_OBJ_IS_BUILTIN_WIDTH;
 
+  ecma_object_t *object_p = (ecma_object_t*) object_mp;
+
   object_p->container = jrt_set_bit_field_value (object_p->container,
                                                  (uintptr_t) is_builtin,
                                                  offset,
@@ -307,10 +327,12 @@ ecma_set_object_is_builtin (ecma_object_t *object_p, /**< object */
  * Get type of lexical environment.
  */
 ecma_lexical_environment_type_t __attribute_pure__
-ecma_get_lex_env_type (const ecma_object_t *object_p) /**< lexical environment */
+ecma_get_lex_env_type (const ecma_object_ptr_t& object_mp) /**< lexical environment */
 {
-  JERRY_ASSERT (object_p != NULL);
-  JERRY_ASSERT (ecma_is_lexical_environment (object_p));
+  JERRY_ASSERT (object_mp.is_not_null ());
+  JERRY_ASSERT (ecma_is_lexical_environment (object_mp));
+
+  ecma_object_t *object_p = (ecma_object_t*) object_mp;
 
   return (ecma_lexical_environment_type_t) jrt_extract_bit_field (object_p->container,
                                                                   ECMA_OBJECT_LEX_ENV_TYPE_POS,
@@ -320,52 +342,57 @@ ecma_get_lex_env_type (const ecma_object_t *object_p) /**< lexical environment *
 /**
  * Get outer reference of lexical environment.
  */
-ecma_object_t* __attribute_pure__
-ecma_get_lex_env_outer_reference (const ecma_object_t *object_p) /**< lexical environment */
+void
+ecma_get_lex_env_outer_reference (ecma_object_ptr_t &ret_val, /**< out: object pointer */
+                                  const ecma_object_ptr_t& object_mp) /**< lexical environment */
 {
-  JERRY_ASSERT (object_p != NULL);
-  JERRY_ASSERT (ecma_is_lexical_environment (object_p));
+  JERRY_ASSERT (object_mp.is_not_null ());
+  JERRY_ASSERT (ecma_is_lexical_environment (object_mp));
+
+  ecma_object_t *object_p = (ecma_object_t*) object_mp;
 
   JERRY_ASSERT (sizeof (uintptr_t) * JERRY_BITSINBYTE >= ECMA_OBJECT_LEX_ENV_OUTER_REFERENCE_CP_WIDTH);
   uintptr_t outer_reference_cp = (uintptr_t) jrt_extract_bit_field (object_p->container,
                                                                     ECMA_OBJECT_LEX_ENV_OUTER_REFERENCE_CP_POS,
                                                                     ECMA_OBJECT_LEX_ENV_OUTER_REFERENCE_CP_WIDTH);
-  return ECMA_GET_POINTER (ecma_object_t,
-                           outer_reference_cp);
+  ret_val.unpack_from (outer_reference_cp, true);
 } /* ecma_get_lex_env_outer_reference */
 
 /**
  * Get object's/lexical environment's property list.
  */
 ecma_property_t* __attribute_pure__
-ecma_get_property_list (const ecma_object_t *object_p) /**< object or lexical environment */
+ecma_get_property_list (const ecma_object_ptr_t& object_mp) /**< object or lexical environment */
 {
-  JERRY_ASSERT (object_p != NULL);
-  JERRY_ASSERT (!ecma_is_lexical_environment (object_p) ||
-                ecma_get_lex_env_type (object_p) == ECMA_LEXICAL_ENVIRONMENT_DECLARATIVE);
+  JERRY_ASSERT (object_mp.is_not_null ());
+  JERRY_ASSERT (!ecma_is_lexical_environment (object_mp) ||
+                ecma_get_lex_env_type (object_mp) == ECMA_LEXICAL_ENVIRONMENT_DECLARATIVE);
+
+  ecma_object_t *object_p = (ecma_object_t*) object_mp;
 
   JERRY_ASSERT (sizeof (uintptr_t) * JERRY_BITSINBYTE >= ECMA_OBJECT_PROPERTIES_OR_BOUND_OBJECT_CP_WIDTH);
   uintptr_t properties_cp = (uintptr_t) jrt_extract_bit_field (object_p->container,
                                                                ECMA_OBJECT_PROPERTIES_OR_BOUND_OBJECT_CP_POS,
                                                                ECMA_OBJECT_PROPERTIES_OR_BOUND_OBJECT_CP_WIDTH);
-  return ECMA_GET_POINTER (ecma_property_t,
-                           properties_cp);
+  return ECMA_GET_POINTER (ecma_property_t, properties_cp);
 } /* ecma_get_property_list */
 
 /**
  * Set object's/lexical environment's property list.
  */
 static void
-ecma_set_property_list (ecma_object_t *object_p, /**< object or lexical environment */
+ecma_set_property_list (const ecma_object_ptr_t& object_mp, /**< object or lexical environment */
                         ecma_property_t *property_list_p) /**< properties' list */
 {
-  JERRY_ASSERT (object_p != NULL);
-  JERRY_ASSERT (!ecma_is_lexical_environment (object_p) ||
-                ecma_get_lex_env_type (object_p) == ECMA_LEXICAL_ENVIRONMENT_DECLARATIVE);
+  JERRY_ASSERT (object_mp.is_not_null ());
+  JERRY_ASSERT (!ecma_is_lexical_environment (object_mp) ||
+                ecma_get_lex_env_type (object_mp) == ECMA_LEXICAL_ENVIRONMENT_DECLARATIVE);
 
-  uint64_t properties_cp;
+  uintptr_t properties_cp;
   ECMA_SET_POINTER (properties_cp, property_list_p);
 
+  ecma_object_t *object_p = (ecma_object_t*) object_mp;
+
   object_p->container = jrt_set_bit_field_value (object_p->container,
                                                  properties_cp,
                                                  ECMA_OBJECT_PROPERTIES_OR_BOUND_OBJECT_CP_POS,
@@ -376,13 +403,16 @@ ecma_set_property_list (ecma_object_t *object_p, /**< object or lexical environm
  * Get lexical environment's 'provideThis' property
  */
 bool __attribute_pure__
-ecma_get_lex_env_provide_this (const ecma_object_t *object_p) /**< object-bound lexical environment */
+ecma_get_lex_env_provide_this (const ecma_object_ptr_t& object_mp) /**< object-bound lexical environment */
 {
-  JERRY_ASSERT (object_p != NULL);
-  JERRY_ASSERT (ecma_is_lexical_environment (object_p) &&
-                ecma_get_lex_env_type (object_p) == ECMA_LEXICAL_ENVIRONMENT_OBJECTBOUND);
+  JERRY_ASSERT (object_mp.is_not_null ());
+  JERRY_ASSERT (ecma_is_lexical_environment (object_mp) &&
+                ecma_get_lex_env_type (object_mp) == ECMA_LEXICAL_ENVIRONMENT_OBJECTBOUND);
 
   JERRY_ASSERT (sizeof (uintptr_t) * JERRY_BITSINBYTE >= ECMA_OBJECT_PROPERTIES_OR_BOUND_OBJECT_CP_WIDTH);
+
+  ecma_object_t *object_p = (ecma_object_t*) object_mp;
+
   bool provide_this = (jrt_extract_bit_field (object_p->container,
                                               ECMA_OBJECT_LEX_ENV_PROVIDE_THIS_POS,
                                               ECMA_OBJECT_LEX_ENV_PROVIDE_THIS_WIDTH) != 0);
@@ -393,18 +423,21 @@ ecma_get_lex_env_provide_this (const ecma_object_t *object_p) /**< object-bound
 /**
  * Get lexical environment's bound object.
  */
-ecma_object_t* __attribute_pure__
-ecma_get_lex_env_binding_object (const ecma_object_t *object_p) /**< object-bound lexical environment */
+void
+ecma_get_lex_env_binding_object (ecma_object_ptr_t &ret_val, /**< out: object pointer */
+                                 const ecma_object_ptr_t& object_mp) /**< object-bound lexical environment */
 {
-  JERRY_ASSERT (object_p != NULL);
-  JERRY_ASSERT (ecma_is_lexical_environment (object_p) &&
-                ecma_get_lex_env_type (object_p) == ECMA_LEXICAL_ENVIRONMENT_OBJECTBOUND);
+  JERRY_ASSERT (object_mp.is_not_null ());
+  JERRY_ASSERT (ecma_is_lexical_environment (object_mp) &&
+                ecma_get_lex_env_type (object_mp) == ECMA_LEXICAL_ENVIRONMENT_OBJECTBOUND);
+
+  ecma_object_t *object_p = (ecma_object_t*) object_mp;
 
   JERRY_ASSERT (sizeof (uintptr_t) * JERRY_BITSINBYTE >= ECMA_OBJECT_PROPERTIES_OR_BOUND_OBJECT_CP_WIDTH);
   uintptr_t object_cp = (uintptr_t) jrt_extract_bit_field (object_p->container,
                                                            ECMA_OBJECT_PROPERTIES_OR_BOUND_OBJECT_CP_POS,
                                                            ECMA_OBJECT_PROPERTIES_OR_BOUND_OBJECT_CP_WIDTH);
-  return ECMA_GET_NON_NULL_POINTER (ecma_object_t, object_cp);
+  ret_val.unpack_from (object_cp);
 } /* ecma_get_lex_env_binding_object */
 
 /**
@@ -414,7 +447,7 @@ ecma_get_lex_env_binding_object (const ecma_object_t *object_p) /**< object-boun
  * @return pointer to newly created property
  */
 ecma_property_t*
-ecma_create_internal_property (ecma_object_t *object_p, /**< the object */
+ecma_create_internal_property (const ecma_object_ptr_t& object_p, /**< the object */
                                ecma_internal_property_id_t property_id) /**< internal property identifier */
 {
   JERRY_ASSERT (ecma_find_internal_property (object_p, property_id) == NULL);
@@ -443,10 +476,10 @@ ecma_create_internal_property (ecma_object_t *object_p, /**< the object */
  *         NULL - otherwise.
  */
 ecma_property_t*
-ecma_find_internal_property (ecma_object_t *object_p, /**< object descriptor */
+ecma_find_internal_property (const ecma_object_ptr_t& object_p, /**< object descriptor */
                              ecma_internal_property_id_t property_id) /**< internal property identifier */
 {
-  JERRY_ASSERT(object_p != NULL);
+  JERRY_ASSERT(object_p.is_not_null ());
 
   JERRY_ASSERT(property_id != ECMA_INTERNAL_PROPERTY_PROTOTYPE
                && property_id != ECMA_INTERNAL_PROPERTY_EXTENSIBLE);
@@ -476,7 +509,7 @@ ecma_find_internal_property (ecma_object_t *object_p, /**< object descriptor */
  * @return pointer to the property
  */
 ecma_property_t*
-ecma_get_internal_property (ecma_object_t *object_p, /**< object descriptor */
+ecma_get_internal_property (const ecma_object_ptr_t& object_p, /**< object descriptor */
                             ecma_internal_property_id_t property_id) /**< internal property identifier */
 {
   ecma_property_t *property_p = ecma_find_internal_property (object_p, property_id);
@@ -493,13 +526,13 @@ ecma_get_internal_property (ecma_object_t *object_p, /**< object descriptor */
  * @return pointer to newly created property
  */
 ecma_property_t*
-ecma_create_named_data_property (ecma_object_t *obj_p, /**< object */
+ecma_create_named_data_property (const ecma_object_ptr_t& obj_p, /**< object */
                                  ecma_string_t *name_p, /**< property name */
                                  bool is_writable, /**< 'Writable' attribute */
                                  bool is_enumerable, /**< 'Enumerable' attribute */
                                  bool is_configurable) /**< 'Configurable' attribute */
 {
-  JERRY_ASSERT(obj_p != NULL && name_p != NULL);
+  JERRY_ASSERT(obj_p.is_not_null () && name_p != NULL);
   JERRY_ASSERT(ecma_find_named_property (obj_p, name_p) == NULL);
 
   ecma_property_t *prop_p = ecma_alloc_property ();
@@ -533,14 +566,14 @@ ecma_create_named_data_property (ecma_object_t *obj_p, /**< object */
  * @return pointer to newly created property
  */
 ecma_property_t*
-ecma_create_named_accessor_property (ecma_object_t *obj_p, /**< object */
+ecma_create_named_accessor_property (const ecma_object_ptr_t& obj_p, /**< object */
                                      ecma_string_t *name_p, /**< property name */
-                                     ecma_object_t *get_p, /**< getter */
-                                     ecma_object_t *set_p, /**< setter */
+                                     const ecma_object_ptr_t& get_p, /**< getter */
+                                     const ecma_object_ptr_t& set_p, /**< setter */
                                      bool is_enumerable, /**< 'enumerable' attribute */
                                      bool is_configurable) /**< 'configurable' attribute */
 {
-  JERRY_ASSERT(obj_p != NULL && name_p != NULL);
+  JERRY_ASSERT(obj_p.is_not_null () && name_p != NULL);
   JERRY_ASSERT(ecma_find_named_property (obj_p, name_p) == NULL);
 
   ecma_property_t *prop_p = ecma_alloc_property ();
@@ -550,10 +583,16 @@ ecma_create_named_accessor_property (ecma_object_t *obj_p, /**< object */
   name_p = ecma_copy_or_ref_ecma_string (name_p);
   ECMA_SET_NON_NULL_POINTER(prop_p->u.named_accessor_property.name_p, name_p);
 
-  ECMA_SET_POINTER(prop_p->u.named_accessor_property.get_p, get_p);
+  {
+    ecma_object_t *get_tmp_p = (ecma_object_t*) get_p;
+    ECMA_SET_POINTER (prop_p->u.named_accessor_property.get_p, get_tmp_p);
+  }
   ecma_gc_update_may_ref_younger_object_flag_by_object (obj_p, get_p);
 
-  ECMA_SET_POINTER(prop_p->u.named_accessor_property.set_p, set_p);
+  {
+    ecma_object_t *set_tmp_p = (ecma_object_t*) set_p;
+    ECMA_SET_POINTER (prop_p->u.named_accessor_property.set_p, set_tmp_p);
+  }
   ecma_gc_update_may_ref_younger_object_flag_by_object (obj_p, set_p);
 
   prop_p->u.named_accessor_property.enumerable = (is_enumerable ?
@@ -579,10 +618,10 @@ ecma_create_named_accessor_property (ecma_object_t *obj_p, /**< object */
  *         NULL - otherwise.
  */
 ecma_property_t*
-ecma_find_named_property (ecma_object_t *obj_p, /**< object to find property in */
+ecma_find_named_property (const ecma_object_ptr_t& obj_p, /**< object to find property in */
                           ecma_string_t *name_p) /**< property's name */
 {
-  JERRY_ASSERT(obj_p != NULL);
+  JERRY_ASSERT(obj_p.is_not_null ());
   JERRY_ASSERT(name_p != NULL);
 
   ecma_property_t *property_p;
@@ -636,10 +675,10 @@ ecma_find_named_property (ecma_object_t *obj_p, /**< object to find property in
  *         NULL - otherwise.
  */
 ecma_property_t*
-ecma_get_named_property (ecma_object_t *obj_p, /**< object to find property in */
+ecma_get_named_property (const ecma_object_ptr_t& obj_p, /**< object to find property in */
                          ecma_string_t *name_p) /**< property's name */
 {
-  JERRY_ASSERT(obj_p != NULL);
+  JERRY_ASSERT(obj_p.is_not_null ());
   JERRY_ASSERT(name_p != NULL);
 
   ecma_property_t *property_p = ecma_find_named_property (obj_p, name_p);
@@ -659,10 +698,10 @@ ecma_get_named_property (ecma_object_t *obj_p, /**< object to find property in *
  *         NULL - otherwise.
  */
 ecma_property_t*
-ecma_get_named_data_property (ecma_object_t *obj_p, /**< object to find property in */
+ecma_get_named_data_property (const ecma_object_ptr_t& obj_p, /**< object to find property in */
                               ecma_string_t *name_p) /**< property's name */
 {
-  JERRY_ASSERT (obj_p != NULL);
+  JERRY_ASSERT (obj_p.is_not_null ());
   JERRY_ASSERT (name_p != NULL);
 
   ecma_property_t *property_p = ecma_find_named_property (obj_p, name_p);
@@ -676,10 +715,10 @@ ecma_get_named_data_property (ecma_object_t *obj_p, /**< object to find property
  * Free the named data property and values it references.
  */
 static void
-ecma_free_named_data_property (ecma_object_t *object_p, /**< object the property belongs to */
+ecma_free_named_data_property (const ecma_object_ptr_t& object_p, /**< object the property belongs to */
                                ecma_property_t *property_p) /**< the property */
 {
-  JERRY_ASSERT (object_p != NULL);
+  JERRY_ASSERT (object_p.is_not_null ());
   JERRY_ASSERT (property_p != NULL && property_p->type == ECMA_PROPERTY_NAMEDDATA);
 
   ecma_lcache_invalidate (object_p, NULL, property_p);
@@ -697,10 +736,10 @@ ecma_free_named_data_property (ecma_object_t *object_p, /**< object the property
  * Free the named accessor property and values it references.
  */
 static void
-ecma_free_named_accessor_property (ecma_object_t *object_p, /**< object the property belongs to */
+ecma_free_named_accessor_property (const ecma_object_ptr_t& object_p, /**< object the property belongs to */
                                    ecma_property_t *property_p) /**< the property */
 {
-  JERRY_ASSERT (object_p != NULL);
+  JERRY_ASSERT (object_p.is_not_null ());
   JERRY_ASSERT (property_p != NULL && property_p->type == ECMA_PROPERTY_NAMEDACCESSOR);
 
   ecma_lcache_invalidate (object_p, NULL, property_p);
@@ -792,7 +831,7 @@ ecma_free_internal_property (ecma_property_t *property_p) /**< the property */
  * Free the property and values it references.
  */
 void
-ecma_free_property (ecma_object_t *object_p, /**< object the property belongs to */
+ecma_free_property (const ecma_object_ptr_t& object_p, /**< object the property belongs to */
                     ecma_property_t *prop_p) /**< property */
 {
   switch ((ecma_property_type_t) prop_p->type)
@@ -826,7 +865,7 @@ ecma_free_property (ecma_object_t *object_p, /**< object the property belongs to
  * Warning: specified property must be owned by specified object.
  */
 void
-ecma_delete_property (ecma_object_t *obj_p, /**< object */
+ecma_delete_property (const ecma_object_ptr_t& obj_p, /**< object */
                       ecma_property_t *prop_p) /**< property */
 {
   for (ecma_property_t *cur_prop_p = ecma_get_property_list (obj_p), *prev_prop_p = NULL, *next_prop_p;
@@ -892,7 +931,7 @@ ecma_set_named_data_property_value (ecma_property_t *prop_p, /**< property */
  *      value previously stored in the property is freed
  */
 void
-ecma_named_data_property_assign_value (ecma_object_t *obj_p, /**< object */
+ecma_named_data_property_assign_value (const ecma_object_ptr_t& obj_p, /**< object */
                                        ecma_property_t *prop_p, /**< property */
                                        const ecma_value_t& value) /**< value to assign */
 {
@@ -1133,13 +1172,17 @@ ecma_free_property_descriptor (ecma_property_descriptor_t *prop_desc_p) /**< pro
   if (prop_desc_p->is_get_defined
       && prop_desc_p->get_p != NULL)
   {
-    ecma_deref_object (prop_desc_p->get_p);
+    ecma_object_ptr_t get_p;
+    get_p = prop_desc_p->get_p;
+    ecma_deref_object (get_p);
   }
 
   if (prop_desc_p->is_set_defined
       && prop_desc_p->set_p != NULL)
   {
-    ecma_deref_object (prop_desc_p->set_p);
+    ecma_object_ptr_t set_p;
+    set_p = prop_desc_p->set_p;
+    ecma_deref_object (set_p);
   }
 
   *prop_desc_p = ecma_make_empty_property_descriptor ();
diff --git a/src/libecmaobjects/ecma-helpers.h b/src/libecmaobjects/ecma-helpers.h
index 3194fcd75..745edbe2b 100644
--- a/src/libecmaobjects/ecma-helpers.h
+++ b/src/libecmaobjects/ecma-helpers.h
@@ -131,60 +131,73 @@ extern bool
 ecma_collection_iterator_next (ecma_collection_iterator_t *iterator_p);
 
 /* ecma-helpers.c */
-extern ecma_object_t* ecma_create_object (ecma_object_t *prototype_object_p,
-                                          bool is_extensible,
-                                          ecma_object_type_t type);
-extern ecma_object_t* ecma_create_decl_lex_env (ecma_object_t *outer_lexical_environment_p);
-extern ecma_object_t* ecma_create_object_lex_env (ecma_object_t *outer_lexical_environment_p,
-                                                  ecma_object_t *binding_obj_p,
-                                                  bool provide_this);
-extern bool __attribute_pure__ ecma_is_lexical_environment (const ecma_object_t *object_p);
-extern bool __attribute_pure__ ecma_get_object_extensible (const ecma_object_t *object_p);
-extern void ecma_set_object_extensible (ecma_object_t *object_p, bool is_extensible);
-extern ecma_object_type_t __attribute_pure__ ecma_get_object_type (const ecma_object_t *object_p);
-extern void ecma_set_object_type (ecma_object_t *object_p, ecma_object_type_t type);
-extern ecma_object_t* __attribute_pure__ ecma_get_object_prototype (const ecma_object_t *object_p);
-extern bool __attribute_pure__ ecma_get_object_is_builtin (const ecma_object_t *object_p);
-extern void ecma_set_object_is_builtin (ecma_object_t *object_p,
+extern void
+ecma_create_object (ecma_object_ptr_t &ret_val,
+                    const ecma_object_ptr_t& prototype_object_p,
+                    bool is_extensible,
+                    ecma_object_type_t type);
+extern void
+ecma_create_decl_lex_env (ecma_object_ptr_t &ret_val,
+                          const ecma_object_ptr_t& outer_lexical_environment_p);
+extern void
+ecma_create_object_lex_env (ecma_object_ptr_t &ret_val,
+                            const ecma_object_ptr_t& outer_lexical_environment_p,
+                            const ecma_object_ptr_t& binding_obj_p,
+                            bool provide_this);
+extern bool __attribute_pure__ ecma_is_lexical_environment (const ecma_object_ptr_t& object_p);
+extern bool __attribute_pure__ ecma_get_object_extensible (const ecma_object_ptr_t& object_p);
+extern void ecma_set_object_extensible (const ecma_object_ptr_t& object_p, bool is_extensible);
+extern ecma_object_type_t __attribute_pure__ ecma_get_object_type (const ecma_object_ptr_t& object_p);
+extern void ecma_set_object_type (const ecma_object_ptr_t& object_p, ecma_object_type_t type);
+extern void
+ecma_get_object_prototype (ecma_object_ptr_t &ret_val,
+                           const ecma_object_ptr_t& object_p);
+extern bool __attribute_pure__ ecma_get_object_is_builtin (const ecma_object_ptr_t& object_p);
+extern void ecma_set_object_is_builtin (const ecma_object_ptr_t& object_p,
                                         bool is_builtin);
-extern ecma_lexical_environment_type_t __attribute_pure__ ecma_get_lex_env_type (const ecma_object_t *object_p);
-extern ecma_object_t* __attribute_pure__ ecma_get_lex_env_outer_reference (const ecma_object_t *object_p);
-extern ecma_property_t* __attribute_pure__ ecma_get_property_list (const ecma_object_t *object_p);
-extern ecma_object_t* __attribute_pure__ ecma_get_lex_env_binding_object (const ecma_object_t *object_p);
-extern bool __attribute_pure__ ecma_get_lex_env_provide_this (const ecma_object_t *object_p);
+extern ecma_lexical_environment_type_t __attribute_pure__
+ecma_get_lex_env_type (const ecma_object_ptr_t& object_p);
+extern void
+ecma_get_lex_env_outer_reference (ecma_object_ptr_t &ret_val,
+                                  const ecma_object_ptr_t& object_p);
+extern ecma_property_t* __attribute_pure__ ecma_get_property_list (const ecma_object_ptr_t& object_p);
+extern void
+ecma_get_lex_env_binding_object (ecma_object_ptr_t &ret_val,
+                                 const ecma_object_ptr_t& object_p);
+extern bool __attribute_pure__ ecma_get_lex_env_provide_this (const ecma_object_ptr_t& object_p);
 
-extern ecma_property_t* ecma_create_internal_property (ecma_object_t *object_p,
+extern ecma_property_t* ecma_create_internal_property (const ecma_object_ptr_t& object_p,
                                                        ecma_internal_property_id_t property_id);
-extern ecma_property_t* ecma_find_internal_property (ecma_object_t *object_p,
+extern ecma_property_t* ecma_find_internal_property (const ecma_object_ptr_t& object_p,
                                                      ecma_internal_property_id_t property_id);
-extern ecma_property_t* ecma_get_internal_property (ecma_object_t *object_p,
+extern ecma_property_t* ecma_get_internal_property (const ecma_object_ptr_t& object_p,
                                                     ecma_internal_property_id_t property_id);
 
-extern ecma_property_t *ecma_create_named_data_property (ecma_object_t *obj_p,
+extern ecma_property_t *ecma_create_named_data_property (const ecma_object_ptr_t& obj_p,
                                                          ecma_string_t *name_p,
                                                          bool is_writable,
                                                          bool is_enumerable,
                                                          bool is_configurable);
-extern ecma_property_t *ecma_create_named_accessor_property (ecma_object_t *obj_p,
+extern ecma_property_t *ecma_create_named_accessor_property (const ecma_object_ptr_t& obj_p,
                                                              ecma_string_t *name_p,
-                                                             ecma_object_t *get_p,
-                                                             ecma_object_t *set_p,
+                                                             const ecma_object_ptr_t& get_p,
+                                                             const ecma_object_ptr_t& set_p,
                                                              bool is_enumerable,
                                                              bool is_configurable);
-extern ecma_property_t *ecma_find_named_property (ecma_object_t *obj_p,
+extern ecma_property_t *ecma_find_named_property (const ecma_object_ptr_t& obj_p,
                                                   ecma_string_t *name_p);
-extern ecma_property_t *ecma_get_named_property (ecma_object_t *obj_p,
+extern ecma_property_t *ecma_get_named_property (const ecma_object_ptr_t& obj_p,
                                                  ecma_string_t *name_p);
-extern ecma_property_t *ecma_get_named_data_property (ecma_object_t *obj_p,
+extern ecma_property_t *ecma_get_named_data_property (const ecma_object_ptr_t& obj_p,
                                                       ecma_string_t *name_p);
 
-extern void ecma_free_property (ecma_object_t *obj_p, ecma_property_t *prop_p);
+extern void ecma_free_property (const ecma_object_ptr_t& obj_p, ecma_property_t *prop_p);
 
-extern void ecma_delete_property (ecma_object_t *obj_p, ecma_property_t *prop_p);
+extern void ecma_delete_property (const ecma_object_ptr_t& obj_p, ecma_property_t *prop_p);
 
 extern void ecma_get_named_data_property_value (ecma_value_t &ret, const ecma_property_t *prop_p);
 extern void ecma_set_named_data_property_value (ecma_property_t *prop_p, const ecma_value_t& value);
-extern void ecma_named_data_property_assign_value (ecma_object_t *obj_p,
+extern void ecma_named_data_property_assign_value (const ecma_object_ptr_t& obj_p,
                                                    ecma_property_t *prop_p,
                                                    const ecma_value_t& value);
 
diff --git a/src/libecmaobjects/ecma-lcache.c b/src/libecmaobjects/ecma-lcache.c
index 10acf6ead..d8a12041a 100644
--- a/src/libecmaobjects/ecma-lcache.c
+++ b/src/libecmaobjects/ecma-lcache.c
@@ -84,8 +84,9 @@ ecma_lcache_invalidate_entry (ecma_lcache_hash_entry_t *entry_p) /**< entry to i
   JERRY_ASSERT (entry_p != NULL);
   JERRY_ASSERT (entry_p->object_cp != ECMA_NULL_POINTER);
 
-  ecma_deref_object (ECMA_GET_NON_NULL_POINTER (ecma_object_t,
-                                                entry_p->object_cp));
+  ecma_object_ptr_t entry_object_p;
+  entry_object_p.unpack_from (entry_p->object_cp);
+  ecma_deref_object (entry_object_p);
 
   entry_p->object_cp = ECMA_NULL_POINTER;
   ecma_deref_ecma_string (ECMA_GET_NON_NULL_POINTER (ecma_string_t,
@@ -122,11 +123,11 @@ ecma_lcache_invalidate_all (void)
  */
 static void
 ecma_lcache_invalidate_row_for_object_property_pair (uint32_t row_index, /**< index of the row */
-                                                     unsigned int object_cp, /**< compressed pointer
-                                                                              *   to an object */
-                                                     unsigned property_cp) /**< compressed pointer
-                                                                            *   to the object's
-                                                                            *   property */
+                                                     uintptr_t object_cp, /**< compressed pointer
+                                                                           *   to an object */
+                                                     uintptr_t property_cp) /**< compressed pointer
+                                                                             *   to the object's
+                                                                             *   property */
 {
   for (uint32_t entry_index = 0; entry_index < ECMA_LCACHE_HASH_ROW_LENGTH; entry_index++)
   {
@@ -142,13 +143,13 @@ ecma_lcache_invalidate_row_for_object_property_pair (uint32_t row_index, /**< in
  * Insert an entry into LCache
  */
 void
-ecma_lcache_insert (ecma_object_t *object_p, /**< object */
+ecma_lcache_insert (const ecma_object_ptr_t& object_p, /**< object */
                     ecma_string_t *prop_name_p, /**< property's name */
                     ecma_property_t *prop_p) /**< pointer to associated property or NULL
                                               *   (NULL indicates that the object doesn't have property
                                               *   with the name specified) */
 {
-  JERRY_ASSERT (object_p != NULL);
+  JERRY_ASSERT (object_p.is_not_null ());
   JERRY_ASSERT (prop_name_p != NULL);
 
   prop_name_p = ecma_copy_or_ref_ecma_string (prop_name_p);
@@ -169,9 +170,9 @@ ecma_lcache_insert (ecma_object_t *object_p, /**< object */
             && ecma_lcache_hash_table[hash_key][entry_index].prop_cp == prop_cp)
         {
 #ifndef JERRY_NDEBUG
-          ecma_object_t* obj_in_entry_p;
-          obj_in_entry_p = ECMA_GET_NON_NULL_POINTER (ecma_object_t,
-                                                      ecma_lcache_hash_table[hash_key][entry_index].object_cp);
+          ecma_object_ptr_t obj_in_entry_p;
+          obj_in_entry_p.unpack_from (ecma_lcache_hash_table[hash_key][entry_index].object_cp);
+
           JERRY_ASSERT (obj_in_entry_p == object_p);
 #endif /* !JERRY_NDEBUG */
           break;
@@ -207,7 +208,10 @@ ecma_lcache_insert (ecma_object_t *object_p, /**< object */
   }
 
   ecma_ref_object (object_p);
-  ECMA_SET_NON_NULL_POINTER (ecma_lcache_hash_table[ hash_key ][ entry_index ].object_cp, object_p);
+  {
+    ecma_object_t *object_tmp_p = (ecma_object_t*) object_p;
+    ECMA_SET_NON_NULL_POINTER (ecma_lcache_hash_table[ hash_key ][ entry_index ].object_cp, object_tmp_p);
+  }
   ECMA_SET_NON_NULL_POINTER (ecma_lcache_hash_table[ hash_key ][ entry_index ].prop_name_cp, prop_name_p);
   ECMA_SET_POINTER (ecma_lcache_hash_table[ hash_key ][ entry_index ].prop_cp, prop_p);
 } /* ecma_lcache_insert */
@@ -219,7 +223,7 @@ ecma_lcache_insert (ecma_object_t *object_p, /**< object */
  *         false - probably, not registered.
  */
 bool __attribute_always_inline__
-ecma_lcache_lookup (ecma_object_t *object_p, /**< object */
+ecma_lcache_lookup (const ecma_object_ptr_t& object_p, /**< object */
                     const ecma_string_t *prop_name_p, /**< property's name */
                     ecma_property_t **prop_p_p) /**< out: if return value is true,
                                                  *         then here will be pointer to property,
@@ -230,8 +234,8 @@ ecma_lcache_lookup (ecma_object_t *object_p, /**< object */
 {
   ecma_string_hash_t hash_key = ecma_string_hash (prop_name_p);
 
-  unsigned int object_cp;
-  ECMA_SET_NON_NULL_POINTER (object_cp, object_p);
+  uintptr_t object_cp;
+  object_p.pack_to (object_cp);
 
   for (uint32_t i = 0; i < ECMA_LCACHE_HASH_ROW_LENGTH; i++)
   {
@@ -269,11 +273,11 @@ ecma_lcache_lookup (ecma_object_t *object_p, /**< object */
  *      from property's description.
  */
 void
-ecma_lcache_invalidate (ecma_object_t *object_p, /**< object */
+ecma_lcache_invalidate (const ecma_object_ptr_t& object_p, /**< object */
                         ecma_string_t *prop_name_arg_p, /**< property's name (See also: Note) */
                         ecma_property_t *prop_p) /**< property (See also: Note) */
 {
-  JERRY_ASSERT (object_p != NULL);
+  JERRY_ASSERT (object_p.is_not_null ());
   JERRY_ASSERT (prop_p != NULL || prop_name_arg_p != NULL);
 
   ecma_string_t *prop_name_p = NULL;
@@ -308,8 +312,8 @@ ecma_lcache_invalidate (ecma_object_t *object_p, /**< object */
     prop_name_p = prop_name_arg_p;
   }
 
-  unsigned int object_cp, prop_cp;
-  ECMA_SET_NON_NULL_POINTER (object_cp, object_p);
+  uintptr_t object_cp, prop_cp;
+  object_p.pack_to (object_cp);
   ECMA_SET_POINTER (prop_cp, prop_p);
 
   ecma_string_hash_t hash_key = ecma_string_hash (prop_name_p);
diff --git a/src/libecmaobjects/ecma-lcache.h b/src/libecmaobjects/ecma-lcache.h
index 38187ef8f..ffb897cf8 100644
--- a/src/libecmaobjects/ecma-lcache.h
+++ b/src/libecmaobjects/ecma-lcache.h
@@ -1,4 +1,4 @@
-/* Copyright 2014 Samsung Electronics Co., Ltd.
+/* Copyright 2014-2015 Samsung Electronics Co., Ltd.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -25,9 +25,15 @@
 
 extern void ecma_lcache_init (void);
 extern void ecma_lcache_invalidate_all (void);
-extern void ecma_lcache_insert (ecma_object_t *object_p, ecma_string_t *prop_name_p, ecma_property_t *prop_p);
-extern bool ecma_lcache_lookup (ecma_object_t *object_p, const ecma_string_t *prop_name_p, ecma_property_t **prop_p_p);
-extern void ecma_lcache_invalidate (ecma_object_t *object_p, ecma_string_t *prop_name_arg_p, ecma_property_t *prop_p);
+extern void ecma_lcache_insert (const ecma_object_ptr_t& object_p, ecma_string_t *prop_name_p, ecma_property_t *prop_p);
+extern bool
+ecma_lcache_lookup (const ecma_object_ptr_t& object_p,
+                    const ecma_string_t *prop_name_p,
+                    ecma_property_t **prop_p_p);
+extern void
+ecma_lcache_invalidate (const ecma_object_ptr_t& object_p,
+                        ecma_string_t *prop_name_arg_p,
+                        ecma_property_t *prop_p);
 
 /**
  * @}
diff --git a/src/libecmaobjects/ecma-value.c b/src/libecmaobjects/ecma-value.c
index 2412a800f..1fb379ca8 100644
--- a/src/libecmaobjects/ecma-value.c
+++ b/src/libecmaobjects/ecma-value.c
@@ -50,10 +50,11 @@ ecma_get_string_from_value (const ecma_value_t& value) /**< ecma-value */
  *
  * @return the pointer
  */
-ecma_object_t* __attribute_pure__
-ecma_get_object_from_value (const ecma_value_t& value) /**< ecma-value */
+void
+ecma_get_object_from_value (ecma_object_ptr_t &ret_val, /**< out: object pointer */
+                            const ecma_value_t& value) /**< ecma-value */
 {
-  return value.get_object ();
+  ret_val = value.get_object ();
 } /* ecma_get_object_from_value */
 
 /**
@@ -114,7 +115,8 @@ ecma_copy_value (ecma_value_t &ret, /**< out: ecma-value */
     }
     case ECMA_TYPE_OBJECT:
     {
-      ecma_object_t *obj_p = ecma_get_object_from_value (value);
+      ecma_object_ptr_t obj_p;
+      ecma_get_object_from_value (obj_p, value);
 
       if (do_ref_if_object)
       {
@@ -162,7 +164,9 @@ ecma_free_value (ecma_value_t& value, /**< value description */
     {
       if (do_deref_if_object)
       {
-        ecma_deref_object (ecma_get_object_from_value (value));
+        ecma_object_ptr_t obj_p;
+        ecma_get_object_from_value (obj_p, value);
+        ecma_deref_object (obj_p);
       }
       break;
     }
@@ -176,9 +180,9 @@ ecma_free_value (ecma_value_t& value, /**< value description */
  */
 void
 ecma_make_throw_obj_completion_value (ecma_completion_value_t &ret_value, /**< out: completion value */
-                                      ecma_object_t *exception_p) /**< an object */
+                                      const ecma_object_ptr_t& exception_p) /**< an object */
 {
-  JERRY_ASSERT(exception_p != NULL
+  JERRY_ASSERT(exception_p.is_not_null ()
                && !ecma_is_lexical_environment (exception_p));
 
   ecma_value_t exception (exception_p);
diff --git a/src/libecmaobjects/ecma-value.h b/src/libecmaobjects/ecma-value.h
index 5cb9c8357..c0cdf1dff 100644
--- a/src/libecmaobjects/ecma-value.h
+++ b/src/libecmaobjects/ecma-value.h
@@ -80,12 +80,18 @@ class ecma_value_t
     }
 
     __attribute_always_inline__
-    explicit ecma_value_t (ecma_object_t *obj_p)
+    explicit ecma_value_t (ecma_object_t* obj_p)
     {
       *this = obj_p;
     }
 
     __attribute_always_inline__
+    explicit ecma_value_t (const ecma_object_ptr_t& obj_p)
+    {
+      *this = obj_p;
+    }
+
+     __attribute_always_inline__
     explicit ecma_value_t (ecma_value_packed_t v)
     {
       *this = v;
@@ -151,7 +157,7 @@ class ecma_value_t
     }
 
     __attribute_always_inline__
-    ecma_value_t& operator = (ecma_object_t *obj_p)
+    ecma_value_t& operator = (ecma_object_t* obj_p)
     {
       JERRY_ASSERT(obj_p != NULL);
 
@@ -161,6 +167,17 @@ class ecma_value_t
       return *this;
     }
 
+    __attribute_always_inline__
+    ecma_value_t& operator = (const ecma_object_ptr_t& obj_p)
+    {
+      JERRY_ASSERT (obj_p.is_not_null ());
+
+      _type = ECMA_TYPE_OBJECT;
+      _value_p = obj_p;
+
+      return *this;
+    }
+
     __attribute_always_inline__
     ecma_value_t& operator = (ecma_value_packed_t packed)
     {
@@ -491,7 +508,9 @@ ecma_is_value_object (const ecma_value_t& value) /**< ecma-value */
 
 extern ecma_number_t* __attribute_pure__ ecma_get_number_from_value (const ecma_value_t& value);
 extern ecma_string_t* __attribute_pure__ ecma_get_string_from_value (const ecma_value_t& value);
-extern ecma_object_t* __attribute_pure__ ecma_get_object_from_value (const ecma_value_t& value);
+extern void
+ecma_get_object_from_value (ecma_object_ptr_t &ret_val,
+                            const ecma_value_t& value);
 extern void ecma_copy_value (ecma_value_t &ret, const ecma_value_t& value, bool do_ref_if_object);
 extern void ecma_free_value (ecma_value_t& value, bool do_deref_if_object);
 
@@ -569,7 +588,9 @@ ecma_make_throw_completion_value (ecma_completion_value_t &ret_value, /**< out:
 #endif /* !CONFIG_ECMA_EXCEPTION_SUPPORT */
 } /* ecma_make_throw_completion_value */
 
-extern void ecma_make_throw_obj_completion_value (ecma_completion_value_t &ret_value, ecma_object_t *exception_p);
+extern void
+ecma_make_throw_obj_completion_value (ecma_completion_value_t &ret_value,
+                                      const ecma_object_ptr_t& exception_p);
 
 /**
  * Empty completion value constructor.
diff --git a/src/libecmaoperations/ecma-array-object.c b/src/libecmaoperations/ecma-array-object.c
index 85bdc2af4..c300fcc17 100644
--- a/src/libecmaoperations/ecma-array-object.c
+++ b/src/libecmaoperations/ecma-array-object.c
@@ -43,7 +43,9 @@ ecma_reject (ecma_completion_value_t &ret_value, /**< out: completion value */
 {
   if (is_throw)
   {
-    ecma_make_throw_obj_completion_value (ret_value, ecma_new_standard_error (ECMA_ERROR_TYPE));
+    ecma_object_ptr_t exception_obj_p;
+    ecma_new_standard_error (exception_obj_p, ECMA_ERROR_TYPE);
+    ecma_make_throw_obj_completion_value (ret_value, exception_obj_p);
   }
   else
   {
@@ -87,7 +89,9 @@ ecma_op_create_array_object (ecma_completion_value_t &ret_value, /**< out: compl
     uint32_t num_uint32 = ecma_number_to_uint32 (*num_p);
     if (*num_p != ecma_uint32_to_number (num_uint32))
     {
-      ecma_make_throw_obj_completion_value (ret_value, ecma_new_standard_error (ECMA_ERROR_RANGE));
+      ecma_object_ptr_t exception_obj_p;
+      ecma_new_standard_error (exception_obj_p, ECMA_ERROR_RANGE);
+      ecma_make_throw_obj_completion_value (ret_value, exception_obj_p);
       return;
     }
     else
@@ -105,12 +109,15 @@ ecma_op_create_array_object (ecma_completion_value_t &ret_value, /**< out: compl
   }
 
 #ifndef CONFIG_ECMA_COMPACT_PROFILE_DISABLE_ARRAY_BUILTIN
-  ecma_object_t *array_prototype_obj_p = ecma_builtin_get (ECMA_BUILTIN_ID_ARRAY_PROTOTYPE);
+  ecma_object_ptr_t array_prototype_obj_p;
+  ecma_builtin_get (array_prototype_obj_p, ECMA_BUILTIN_ID_ARRAY_PROTOTYPE);
 #else /* !CONFIG_ECMA_COMPACT_PROFILE_DISABLE_ARRAY_BUILTIN */
-  ecma_object_t *array_prototype_obj_p = ecma_builtin_get (ECMA_BUILTIN_ID_OBJECT_PROTOTYPE);
+  ecma_object_ptr_t array_prototype_obj_p;
+  ecma_builtin_get (array_prototype_obj_p, ECMA_BUILTIN_ID_OBJECT_PROTOTYPE);
 #endif /* CONFIG_ECMA_COMPACT_PROFILE_DISABLE_ARRAY_BUILTIN */
 
-  ecma_object_t *obj_p = ecma_create_object (array_prototype_obj_p, true, ECMA_OBJECT_TYPE_ARRAY);
+  ecma_object_ptr_t obj_p;
+  ecma_create_object (obj_p, array_prototype_obj_p, true, ECMA_OBJECT_TYPE_ARRAY);
   ecma_deref_object (array_prototype_obj_p);
 
   ecma_property_t *class_prop_p = ecma_create_internal_property (obj_p, ECMA_INTERNAL_PROPERTY_CLASS);
@@ -174,7 +181,7 @@ ecma_op_create_array_object (ecma_completion_value_t &ret_value, /**< out: compl
  */
 void
 ecma_op_array_object_define_own_property (ecma_completion_value_t &ret_value, /**< out: completion value */
-                                          ecma_object_t *obj_p, /**< the array object */
+                                          const ecma_object_ptr_t& obj_p, /**< the array object */
                                           ecma_string_t *property_name_p, /**< property name */
                                           const ecma_property_descriptor_t* property_desc_p, /**< property descriptor */
                                           bool is_throw) /**< flag that controls failure handling */
@@ -235,7 +242,9 @@ ecma_op_array_object_define_own_property (ecma_completion_value_t &ret_value, /*
     // d.
     if (ecma_uint32_to_number (new_len_uint32) != new_len_num)
     {
-      ecma_make_throw_obj_completion_value (ret_value, ecma_new_standard_error (ECMA_ERROR_RANGE));
+      ecma_object_ptr_t exception_obj_p;
+      ecma_new_standard_error (exception_obj_p, ECMA_ERROR_RANGE);
+      ecma_make_throw_obj_completion_value (ret_value, exception_obj_p);
       return;
     }
     else
diff --git a/src/libecmaoperations/ecma-array-object.h b/src/libecmaoperations/ecma-array-object.h
index 2dbf8887b..598786927 100644
--- a/src/libecmaoperations/ecma-array-object.h
+++ b/src/libecmaoperations/ecma-array-object.h
@@ -34,7 +34,7 @@ ecma_op_create_array_object (ecma_completion_value_t &ret_value,
 
 extern void
 ecma_op_array_object_define_own_property (ecma_completion_value_t &ret_value,
-                                          ecma_object_t *obj_p,
+                                          const ecma_object_ptr_t& obj_p,
                                           ecma_string_t *property_name_p,
                                           const ecma_property_descriptor_t* property_desc_p,
                                           bool is_throw);
diff --git a/src/libecmaoperations/ecma-boolean-object.c b/src/libecmaoperations/ecma-boolean-object.c
index 90a117ca1..245f30799 100644
--- a/src/libecmaoperations/ecma-boolean-object.c
+++ b/src/libecmaoperations/ecma-boolean-object.c
@@ -55,14 +55,15 @@ ecma_op_create_boolean_object (ecma_completion_value_t &ret_value, /**< out: com
                                     ECMA_SIMPLE_VALUE_TRUE : ECMA_SIMPLE_VALUE_FALSE);
 
 #ifndef CONFIG_ECMA_COMPACT_PROFILE_DISABLE_BOOLEAN_BUILTIN
-  ecma_object_t *prototype_obj_p = ecma_builtin_get (ECMA_BUILTIN_ID_BOOLEAN_PROTOTYPE);
+  ecma_object_ptr_t prototype_obj_p;
+  ecma_builtin_get (prototype_obj_p, ECMA_BUILTIN_ID_BOOLEAN_PROTOTYPE);
 #else /* !CONFIG_ECMA_COMPACT_PROFILE_DISABLE_BOOLEAN_BUILTIN */
-  ecma_object_t *prototype_obj_p = ecma_builtin_get (ECMA_BUILTIN_ID_OBJECT_PROTOTYPE);
+  ecma_object_ptr_t prototype_obj_p;
+  ecma_builtin_get (prototype_obj_p, ECMA_BUILTIN_ID_OBJECT_PROTOTYPE);
 #endif /* CONFIG_ECMA_COMPACT_PROFILE_DISABLE_BOOLEAN_BUILTIN */
 
-  ecma_object_t *obj_p = ecma_create_object (prototype_obj_p,
-                                             true,
-                                             ECMA_OBJECT_TYPE_GENERAL);
+  ecma_object_ptr_t obj_p;
+  ecma_create_object (obj_p, prototype_obj_p, true, ECMA_OBJECT_TYPE_GENERAL);
   ecma_deref_object (prototype_obj_p);
 
   ecma_property_t *class_prop_p = ecma_create_internal_property (obj_p, ECMA_INTERNAL_PROPERTY_CLASS);
diff --git a/src/libecmaoperations/ecma-comparison.c b/src/libecmaoperations/ecma-comparison.c
index 7a4339701..34a362d6a 100644
--- a/src/libecmaoperations/ecma-comparison.c
+++ b/src/libecmaoperations/ecma-comparison.c
@@ -121,7 +121,11 @@ ecma_op_abstract_equality_compare (ecma_completion_value_t &ret_value, /**< out:
     { // f.
       JERRY_ASSERT(is_x_object);
 
-      bool is_equal = (ecma_get_object_from_value (x) == ecma_get_object_from_value (y));
+      ecma_object_ptr_t x_obj_p, y_obj_p;
+      ecma_get_object_from_value (x_obj_p, x);
+      ecma_get_object_from_value (y_obj_p, y);
+
+      bool is_equal = (x_obj_p == y_obj_p);
 
       ecma_make_simple_completion_value (ret_value, is_equal ? ECMA_SIMPLE_VALUE_TRUE : ECMA_SIMPLE_VALUE_FALSE);
     }
@@ -302,7 +306,11 @@ ecma_op_strict_equality_compare (const ecma_value_t& x, /**< first operand */
   // 7. Return true if x and y refer to the same object. Otherwise, return false.
   JERRY_ASSERT (is_x_object);
 
-  return (ecma_get_object_from_value (x) == ecma_get_object_from_value (y));
+  ecma_object_ptr_t x_obj_p, y_obj_p;
+  ecma_get_object_from_value (x_obj_p, x);
+  ecma_get_object_from_value (y_obj_p, y);
+
+  return (x_obj_p == y_obj_p);
 } /* ecma_op_strict_equality_compare */
 
 /**
diff --git a/src/libecmaoperations/ecma-conversion.c b/src/libecmaoperations/ecma-conversion.c
index 51904434c..5dbd7baad 100644
--- a/src/libecmaoperations/ecma-conversion.c
+++ b/src/libecmaoperations/ecma-conversion.c
@@ -57,7 +57,9 @@ ecma_op_check_object_coercible (ecma_completion_value_t &ret_value, /**< out: co
   if (ecma_is_value_undefined (value)
       || ecma_is_value_null (value))
   {
-    ecma_make_throw_obj_completion_value (ret_value, ecma_new_standard_error (ECMA_ERROR_TYPE));
+    ecma_object_ptr_t exception_obj_p;
+    ecma_new_standard_error (exception_obj_p, ECMA_ERROR_TYPE);
+    ecma_make_throw_obj_completion_value (ret_value, exception_obj_p);
   }
   else
   {
@@ -145,7 +147,11 @@ ecma_op_same_value (const ecma_value_t& x, /**< ecma-value */
 
   JERRY_ASSERT(is_x_object);
 
-  return (ecma_get_object_from_value (x) == ecma_get_object_from_value (y));
+  ecma_object_ptr_t x_obj_p, y_obj_p;
+  ecma_get_object_from_value (x_obj_p, x);
+  ecma_get_object_from_value (y_obj_p, y);
+
+  return (x_obj_p == y_obj_p);
 } /* ecma_op_same_value */
 
 /**
@@ -166,7 +172,8 @@ ecma_op_to_primitive (ecma_completion_value_t &ret_value, /**< out: completion v
 
   if (ecma_is_value_object (value))
   {
-    ecma_object_t *obj_p = ecma_get_object_from_value (value);
+    ecma_object_ptr_t obj_p;
+    ecma_get_object_from_value (obj_p, value);
 
     ecma_op_object_default_value (ret_value, obj_p, preferred_type);
   }
@@ -413,7 +420,9 @@ ecma_op_to_object (ecma_completion_value_t &ret_value, /**< out: completion valu
     if (ecma_is_value_undefined (value)
         || ecma_is_value_null (value))
     {
-      ecma_make_throw_obj_completion_value (ret_value, ecma_new_standard_error (ECMA_ERROR_TYPE));
+      ecma_object_ptr_t exception_obj_p;
+      ecma_new_standard_error (exception_obj_p, ECMA_ERROR_TYPE);
+      ecma_make_throw_obj_completion_value (ret_value, exception_obj_p);
     }
     else
     {
@@ -432,11 +441,12 @@ ecma_op_to_object (ecma_completion_value_t &ret_value, /**< out: completion valu
  *
  * @return constructed object
  */
-ecma_object_t*
-ecma_op_from_property_descriptor (const ecma_property_descriptor_t* src_prop_desc_p) /**< property descriptor */
+void
+ecma_op_from_property_descriptor (ecma_object_ptr_t &obj_p, /**< out: object pointer */
+                                  const ecma_property_descriptor_t* src_prop_desc_p) /**< property descriptor */
 {
   // 2.
-  ecma_object_t *obj_p = ecma_op_create_object_object_noarg ();
+  ecma_op_create_object_object_noarg (obj_p);
 
   ecma_completion_value_t completion;
   ecma_property_descriptor_t prop_desc = ecma_make_empty_property_descriptor ();
@@ -554,8 +564,6 @@ ecma_op_from_property_descriptor (const ecma_property_descriptor_t* src_prop_des
                                       false);
   ecma_deref_ecma_string (configurable_magic_string_p);
   JERRY_ASSERT (ecma_is_completion_value_normal_true (completion));
-
-  return obj_p;
 } /* ecma_op_from_property_descriptor */
 
 /**
@@ -579,11 +587,14 @@ ecma_op_to_property_descriptor (ecma_completion_value_t &ret_value, /**< out: co
   // 1.
   if (!ecma_is_value_object (obj_value))
   {
-    ecma_make_throw_obj_completion_value (ret_value, ecma_new_standard_error (ECMA_ERROR_TYPE));
+    ecma_object_ptr_t exception_obj_p;
+    ecma_new_standard_error (exception_obj_p, ECMA_ERROR_TYPE);
+    ecma_make_throw_obj_completion_value (ret_value, exception_obj_p);
   }
   else
   {
-    ecma_object_t *obj_p = ecma_get_object_from_value (obj_value);
+    ecma_object_ptr_t obj_p;
+    ecma_get_object_from_value (obj_p, obj_value);
 
     // 2.
     ecma_property_descriptor_t prop_desc = ecma_make_empty_property_descriptor ();
@@ -713,7 +724,9 @@ ecma_op_to_property_descriptor (ecma_completion_value_t &ret_value, /**< out: co
         if (!ecma_op_is_callable (get_prop_value)
             && !ecma_is_value_undefined (get_prop_value))
         {
-          ecma_make_throw_obj_completion_value (ret_value, ecma_new_standard_error (ECMA_ERROR_TYPE));
+          ecma_object_ptr_t exception_obj_p;
+          ecma_new_standard_error (exception_obj_p, ECMA_ERROR_TYPE);
+          ecma_make_throw_obj_completion_value (ret_value, exception_obj_p);
         }
         else
         {
@@ -727,10 +740,11 @@ ecma_op_to_property_descriptor (ecma_completion_value_t &ret_value, /**< out: co
           {
             JERRY_ASSERT (ecma_is_value_object (get_prop_value));
 
-            ecma_object_t *get_p = ecma_get_object_from_value (get_prop_value);
+            ecma_object_ptr_t get_p;
+            ecma_get_object_from_value (get_p, get_prop_value);
             ecma_ref_object (get_p);
 
-            prop_desc.get_p = get_p;
+            prop_desc.get_p = (ecma_object_t*) get_p;
           }
         }
 
@@ -755,7 +769,9 @@ ecma_op_to_property_descriptor (ecma_completion_value_t &ret_value, /**< out: co
         if (!ecma_op_is_callable (set_prop_value)
             && !ecma_is_value_undefined (set_prop_value))
         {
-          ecma_make_throw_obj_completion_value (ret_value, ecma_new_standard_error (ECMA_ERROR_TYPE));
+          ecma_object_ptr_t exception_obj_p;
+          ecma_new_standard_error (exception_obj_p, ECMA_ERROR_TYPE);
+          ecma_make_throw_obj_completion_value (ret_value, exception_obj_p);
         }
         else
         {
@@ -769,10 +785,11 @@ ecma_op_to_property_descriptor (ecma_completion_value_t &ret_value, /**< out: co
           {
             JERRY_ASSERT (ecma_is_value_object (set_prop_value));
 
-            ecma_object_t *set_p = ecma_get_object_from_value (set_prop_value);
+            ecma_object_ptr_t set_p;
+            ecma_get_object_from_value (set_p, set_prop_value);
             ecma_ref_object (set_p);
 
-            prop_desc.set_p = set_p;
+            prop_desc.set_p = (ecma_object_t*) set_p;
           }
         }
 
@@ -793,7 +810,9 @@ ecma_op_to_property_descriptor (ecma_completion_value_t &ret_value, /**< out: co
         if (prop_desc.is_value_defined
             || prop_desc.is_writable_defined)
         {
-          ecma_make_throw_obj_completion_value (ret_value, ecma_new_standard_error (ECMA_ERROR_TYPE));
+          ecma_object_ptr_t exception_obj_p;
+          ecma_new_standard_error (exception_obj_p, ECMA_ERROR_TYPE);
+          ecma_make_throw_obj_completion_value (ret_value, exception_obj_p);
         }
       }
     }
diff --git a/src/libecmaoperations/ecma-conversion.h b/src/libecmaoperations/ecma-conversion.h
index 85fb122af..27ae25fc9 100644
--- a/src/libecmaoperations/ecma-conversion.h
+++ b/src/libecmaoperations/ecma-conversion.h
@@ -60,8 +60,9 @@ extern void
 ecma_op_to_object (ecma_completion_value_t &ret_value,
                    const ecma_value_t& value);
 
-extern ecma_object_t*
-ecma_op_from_property_descriptor (const ecma_property_descriptor_t* src_prop_desc_p);
+extern void
+ecma_op_from_property_descriptor (ecma_object_ptr_t &ret_val,
+                                  const ecma_property_descriptor_t* src_prop_desc_p);
 extern void
 ecma_op_to_property_descriptor (ecma_completion_value_t &ret_value,
                                 const ecma_value_t& obj_value,
diff --git a/src/libecmaoperations/ecma-exceptions.c b/src/libecmaoperations/ecma-exceptions.c
index 3f86bc4bf..65f3db382 100644
--- a/src/libecmaoperations/ecma-exceptions.c
+++ b/src/libecmaoperations/ecma-exceptions.c
@@ -35,8 +35,9 @@
  * @return pointer to ecma-object representing specified error
  *         with reference counter set to one.
  */
-ecma_object_t*
-ecma_new_standard_error (ecma_standard_error_t error_type) /**< native error type */
+void
+ecma_new_standard_error (ecma_object_ptr_t &new_error_obj_p, /**< out: object pointer */
+                         ecma_standard_error_t error_type) /**< native error type */
 {
 #ifndef CONFIG_ECMA_COMPACT_PROFILE_DISABLE_ERROR_BUILTINS
   ecma_builtin_id_t prototype_id = ECMA_BUILTIN_ID__COUNT;
@@ -86,23 +87,20 @@ ecma_new_standard_error (ecma_standard_error_t error_type) /**< native error typ
     }
   }
 
-  ecma_object_t *prototype_obj_p = ecma_builtin_get (prototype_id);
+  ecma_object_ptr_t prototype_obj_p;
+  ecma_builtin_get (prototype_obj_p, prototype_id);
 
-  ecma_object_t *new_error_obj_p = ecma_create_object (prototype_obj_p,
-                                                       true,
-                                                       ECMA_OBJECT_TYPE_GENERAL);
+  ecma_create_object (new_error_obj_p, prototype_obj_p, true, ECMA_OBJECT_TYPE_GENERAL);
 
   ecma_deref_object (prototype_obj_p);
 
   ecma_property_t *class_prop_p = ecma_create_internal_property (new_error_obj_p,
                                                                  ECMA_INTERNAL_PROPERTY_CLASS);
   class_prop_p->u.internal_property.value = ECMA_MAGIC_STRING_ERROR_UL;
-
-  return new_error_obj_p;
 #else /* !CONFIG_ECMA_COMPACT_PROFILE_DISABLE_ERROR_BUILTINS */
   (void) error_type;
 
-  return ecma_builtin_get (ECMA_BUILTIN_ID_COMPACT_PROFILE_ERROR);
+  ecma_builtin_get (new_error_obj_p, ECMA_BUILTIN_ID_COMPACT_PROFILE_ERROR);
 #endif /* CONFIG_ECMA_COMPACT_PROFILE_DISABLE_ERROR_BUILTINS */
 } /* ecma_new_standard_error */
 
@@ -112,11 +110,12 @@ ecma_new_standard_error (ecma_standard_error_t error_type) /**< native error typ
  * @return pointer to ecma-object representing specified error
  *         with reference counter set to one.
  */
-ecma_object_t*
-ecma_new_standard_error_with_message (ecma_standard_error_t error_type, /**< native error type */
+void
+ecma_new_standard_error_with_message (ecma_object_ptr_t &new_error_obj_p, /**< out: object pointer */
+                                      ecma_standard_error_t error_type, /**< native error type */
                                       ecma_string_t* message_string_p) /**< message string */
 {
-  ecma_object_t *new_error_obj_p = ecma_new_standard_error (error_type);
+  ecma_new_standard_error (new_error_obj_p, error_type);
 
   ecma_string_t *message_magic_string_p = ecma_get_magic_string (ECMA_MAGIC_STRING_MESSAGE);
   ecma_property_t *prop_p = ecma_create_named_data_property (new_error_obj_p,
@@ -126,8 +125,6 @@ ecma_new_standard_error_with_message (ecma_standard_error_t error_type, /**< nat
   ecma_set_named_data_property_value (prop_p,
                                       ecma_value_t (ecma_copy_or_ref_ecma_string (message_string_p)));
   ecma_deref_ecma_string (message_magic_string_p);
-
-  return new_error_obj_p;
 } /* ecma_new_standard_error_with_message */
 
 /**
diff --git a/src/libecmaoperations/ecma-exceptions.h b/src/libecmaoperations/ecma-exceptions.h
index 70de15389..8eb09e23f 100644
--- a/src/libecmaoperations/ecma-exceptions.h
+++ b/src/libecmaoperations/ecma-exceptions.h
@@ -1,4 +1,4 @@
-/* Copyright 2014 Samsung Electronics Co., Ltd.
+/* Copyright 2014-2015 Samsung Electronics Co., Ltd.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -44,9 +44,13 @@ typedef enum
   ECMA_ERROR_URI /**< URIError */
 } ecma_standard_error_t;
 
-extern ecma_object_t *ecma_new_standard_error (ecma_standard_error_t error_type);
-extern ecma_object_t* ecma_new_standard_error_with_message (ecma_standard_error_t error_type,
-                                                            ecma_string_t *message_string_p);
+extern void
+ecma_new_standard_error (ecma_object_ptr_t &ret_val,
+                         ecma_standard_error_t error_type);
+extern void
+ecma_new_standard_error_with_message (ecma_object_ptr_t &ret_val,
+                                      ecma_standard_error_t error_type,
+                                      ecma_string_t *message_string_p);
 
 /**
  * @}
diff --git a/src/libecmaoperations/ecma-function-object.c b/src/libecmaoperations/ecma-function-object.c
index 3861f3b3e..27784dff8 100644
--- a/src/libecmaoperations/ecma-function-object.c
+++ b/src/libecmaoperations/ecma-function-object.c
@@ -94,9 +94,10 @@ ecma_op_is_callable (const ecma_value_t& value) /**< ecma-value */
     return false;
   }
 
-  ecma_object_t *obj_p = ecma_get_object_from_value (value);
+  ecma_object_ptr_t obj_p;
+  ecma_get_object_from_value (obj_p, value);
 
-  JERRY_ASSERT(obj_p != NULL);
+  JERRY_ASSERT(obj_p.is_not_null ());
   JERRY_ASSERT(!ecma_is_lexical_environment (obj_p));
 
   return (ecma_get_object_type (obj_p) == ECMA_OBJECT_TYPE_FUNCTION
@@ -118,9 +119,10 @@ ecma_is_constructor (const ecma_value_t& value) /**< ecma-value */
     return false;
   }
 
-  ecma_object_t *obj_p = ecma_get_object_from_value (value);
+  ecma_object_ptr_t obj_p;
+  ecma_get_object_from_value (obj_p, value);
 
-  JERRY_ASSERT(obj_p != NULL);
+  JERRY_ASSERT(obj_p.is_not_null ());
   JERRY_ASSERT(!ecma_is_lexical_environment (obj_p));
 
   return (ecma_get_object_type (obj_p) == ECMA_OBJECT_TYPE_FUNCTION
@@ -134,17 +136,19 @@ ecma_is_constructor (const ecma_value_t& value) /**< ecma-value */
  *
  * @return pointer to newly created Function object
  */
-ecma_object_t*
-ecma_op_create_function_object (ecma_string_t* formal_parameter_list_p[], /**< formal parameters list */
+void
+ecma_op_create_function_object (ecma_object_ptr_t &function_obj_p, /**< out: object pointer */
+                                ecma_string_t* formal_parameter_list_p[], /**< formal parameters list */
                                 ecma_length_t formal_parameters_number, /**< formal parameters list's length */
-                                ecma_object_t *scope_p, /**< function's scope */
+                                const ecma_object_ptr_t& scope_p, /**< function's scope */
                                 bool is_strict, /**< 'strict' flag */
                                 opcode_counter_t first_opcode_idx) /**< index of first opcode of function's body */
 {
   // 1., 4., 13.
-  ecma_object_t *prototype_obj_p = ecma_builtin_get (ECMA_BUILTIN_ID_FUNCTION_PROTOTYPE);
+  ecma_object_ptr_t prototype_obj_p;
+  ecma_builtin_get (prototype_obj_p, ECMA_BUILTIN_ID_FUNCTION_PROTOTYPE);
 
-  ecma_object_t *f = ecma_create_object (prototype_obj_p, true, ECMA_OBJECT_TYPE_FUNCTION);
+  ecma_create_object (function_obj_p, prototype_obj_p, true, ECMA_OBJECT_TYPE_FUNCTION);
 
   ecma_deref_object (prototype_obj_p);
 
@@ -156,16 +160,19 @@ ecma_op_create_function_object (ecma_string_t* formal_parameter_list_p[], /**< f
    */
 
   // 3.
-  ecma_property_t *class_prop_p = ecma_create_internal_property (f, ECMA_INTERNAL_PROPERTY_CLASS);
+  ecma_property_t *class_prop_p = ecma_create_internal_property (function_obj_p, ECMA_INTERNAL_PROPERTY_CLASS);
   class_prop_p->u.internal_property.value = ECMA_MAGIC_STRING_FUNCTION_UL;
 
   // 9.
-  ecma_property_t *scope_prop_p = ecma_create_internal_property (f, ECMA_INTERNAL_PROPERTY_SCOPE);
-  ECMA_SET_POINTER(scope_prop_p->u.internal_property.value, scope_p);
-  ecma_gc_update_may_ref_younger_object_flag_by_object (f, scope_p);
+  ecma_property_t *scope_prop_p = ecma_create_internal_property (function_obj_p, ECMA_INTERNAL_PROPERTY_SCOPE);
+  {
+    ecma_object_t *scope_tmp_p = (ecma_object_t*) scope_p;
+    ECMA_SET_POINTER(scope_prop_p->u.internal_property.value, scope_tmp_p);
+  }
+  ecma_gc_update_may_ref_younger_object_flag_by_object (function_obj_p, scope_p);
 
   // 10., 11.
-  ecma_property_t *formal_parameters_prop_p = ecma_create_internal_property (f,
+  ecma_property_t *formal_parameters_prop_p = ecma_create_internal_property (function_obj_p,
                                                                              ECMA_INTERNAL_PROPERTY_FORMAL_PARAMETERS);
   if (formal_parameters_number != 0)
   {
@@ -179,7 +186,7 @@ ecma_op_create_function_object (ecma_string_t* formal_parameter_list_p[], /**< f
   }
 
   // 12.
-  ecma_property_t *code_prop_p = ecma_create_internal_property (f, ECMA_INTERNAL_PROPERTY_CODE);
+  ecma_property_t *code_prop_p = ecma_create_internal_property (function_obj_p, ECMA_INTERNAL_PROPERTY_CODE);
   code_prop_p->u.internal_property.value = ecma_pack_code_internal_property_value (is_strict,
                                                                                    first_opcode_idx);
 
@@ -195,7 +202,7 @@ ecma_op_create_function_object (ecma_string_t* formal_parameter_list_p[], /**< f
   ecma_string_t* magic_string_length_p = ecma_get_magic_string (ECMA_MAGIC_STRING_LENGTH);
   ecma_completion_value_t completion;
   ecma_op_object_define_own_property (completion,
-                                      f,
+                                      function_obj_p,
                                       magic_string_length_p,
                                       &length_prop_desc,
                                       false);
@@ -208,13 +215,14 @@ ecma_op_create_function_object (ecma_string_t* formal_parameter_list_p[], /**< f
   len_p = NULL;
 
   // 16.
-  ecma_object_t *proto_p = ecma_op_create_object_object_noarg ();
+  ecma_object_ptr_t proto_p;
+  ecma_op_create_object_object_noarg (proto_p);
 
   // 17.
   ecma_property_descriptor_t prop_desc = ecma_make_empty_property_descriptor ();
   {
     prop_desc.is_value_defined = true;
-    prop_desc.value = (ecma_value_packed_t) ecma_value_t (f);
+    prop_desc.value = (ecma_value_packed_t) ecma_value_t (function_obj_p);
 
     prop_desc.is_writable_defined = true;
     prop_desc.is_writable = true;
@@ -242,7 +250,7 @@ ecma_op_create_function_object (ecma_string_t* formal_parameter_list_p[], /**< f
   prop_desc.is_configurable = false;
   ecma_string_t *magic_string_prototype_p = ecma_get_magic_string (ECMA_MAGIC_STRING_PROTOTYPE);
   ecma_op_object_define_own_property (completion,
-                                      f,
+                                      function_obj_p,
                                       magic_string_prototype_p,
                                       &prop_desc,
                                       false);
@@ -256,7 +264,8 @@ ecma_op_create_function_object (ecma_string_t* formal_parameter_list_p[], /**< f
   // 19.
   if (is_strict)
   {
-    ecma_object_t *thrower_p = ecma_builtin_get (ECMA_BUILTIN_ID_TYPE_ERROR_THROWER);
+    ecma_object_ptr_t thrower_p;
+    ecma_builtin_get (thrower_p, ECMA_BUILTIN_ID_TYPE_ERROR_THROWER);
 
     prop_desc = ecma_make_empty_property_descriptor ();
     {
@@ -267,15 +276,15 @@ ecma_op_create_function_object (ecma_string_t* formal_parameter_list_p[], /**< f
       prop_desc.is_configurable = false;
 
       prop_desc.is_get_defined = true;
-      prop_desc.get_p = thrower_p;
+      prop_desc.get_p = (ecma_object_t*) thrower_p;
 
       prop_desc.is_set_defined = true;
-      prop_desc.set_p = thrower_p;
+      prop_desc.set_p = (ecma_object_t*) thrower_p;
     }
 
     ecma_string_t *magic_string_caller_p = ecma_get_magic_string (ECMA_MAGIC_STRING_CALLER);
     ecma_op_object_define_own_property (completion,
-                                        f,
+                                        function_obj_p,
                                         magic_string_caller_p,
                                         &prop_desc,
                                         false);
@@ -286,7 +295,7 @@ ecma_op_create_function_object (ecma_string_t* formal_parameter_list_p[], /**< f
 
     ecma_string_t *magic_string_arguments_p = ecma_get_magic_string (ECMA_MAGIC_STRING_ARGUMENTS);
     ecma_op_object_define_own_property (completion,
-                                        f,
+                                        function_obj_p,
                                         magic_string_arguments_p,
                                         &prop_desc,
                                         false);
@@ -297,8 +306,6 @@ ecma_op_create_function_object (ecma_string_t* formal_parameter_list_p[], /**< f
 
     ecma_deref_object (thrower_p);
   }
-
-  return f;
 } /* ecma_op_create_function_object */
 
 /**
@@ -312,8 +319,8 @@ ecma_op_create_function_object (ecma_string_t* formal_parameter_list_p[], /**< f
  */
 static void
 ecma_function_call_setup_args_variables (ecma_completion_value_t &ret_value, /**< out: completion value */
-                                         ecma_object_t *func_obj_p, /**< Function object */
-                                         ecma_object_t *env_p, /**< lexical environment */
+                                         const ecma_object_ptr_t& func_obj_p, /**< Function object */
+                                         const ecma_object_ptr_t& env_p, /**< lexical environment */
                                          const ecma_value_t *arguments_list_p, /**< arguments list */
                                          ecma_length_t arguments_list_len, /**< length of argument list */
                                          bool is_strict) /**< flag indicating strict mode */
@@ -399,10 +406,10 @@ ecma_function_call_setup_args_variables (ecma_completion_value_t &ret_value, /**
  */
 void
 ecma_op_function_has_instance (ecma_completion_value_t &ret_value, /**< out: completion value */
-                               ecma_object_t *func_obj_p, /**< Function object */
+                               const ecma_object_ptr_t& func_obj_p, /**< Function object */
                                const ecma_value_t& value) /**< argument 'V' */
 {
-  JERRY_ASSERT(func_obj_p != NULL
+  JERRY_ASSERT(func_obj_p.is_not_null ()
                && !ecma_is_lexical_environment (func_obj_p));
 
   if (ecma_get_object_type (func_obj_p) == ECMA_OBJECT_TYPE_FUNCTION)
@@ -413,7 +420,8 @@ ecma_op_function_has_instance (ecma_completion_value_t &ret_value, /**< out: com
       return;
     }
 
-    ecma_object_t* v_obj_p = ecma_get_object_from_value (value);
+    ecma_object_ptr_t v_obj_p;
+    ecma_get_object_from_value (v_obj_p, value);
 
     ecma_string_t *prototype_magic_string_p = ecma_get_magic_string (ECMA_MAGIC_STRING_PROTOTYPE);
 
@@ -421,19 +429,22 @@ ecma_op_function_has_instance (ecma_completion_value_t &ret_value, /**< out: com
 
     if (!ecma_is_value_object (prototype_obj_value))
     {
-      ecma_make_throw_obj_completion_value (ret_value, ecma_new_standard_error (ECMA_ERROR_TYPE));
+      ecma_object_ptr_t exception_obj_p;
+      ecma_new_standard_error (exception_obj_p, ECMA_ERROR_TYPE);
+      ecma_make_throw_obj_completion_value (ret_value, exception_obj_p);
       return;
     }
     else
     {
-      ecma_object_t *prototype_obj_p = ecma_get_object_from_value (prototype_obj_value);
-      JERRY_ASSERT (prototype_obj_p != NULL);
+      ecma_object_ptr_t prototype_obj_p;
+      ecma_get_object_from_value (prototype_obj_p, prototype_obj_value);
+      JERRY_ASSERT (prototype_obj_p.is_not_null ());
 
       do
       {
-        v_obj_p = ecma_get_object_prototype (v_obj_p);
+        ecma_get_object_prototype (v_obj_p, v_obj_p);
 
-        if (v_obj_p == NULL)
+        if (v_obj_p.is_null ())
         {
           ecma_make_simple_completion_value (ret_value, ECMA_SIMPLE_VALUE_FALSE);
 
@@ -454,7 +465,9 @@ ecma_op_function_has_instance (ecma_completion_value_t &ret_value, /**< out: com
   }
   else if (ecma_get_object_type (func_obj_p) == ECMA_OBJECT_TYPE_BUILT_IN_FUNCTION)
   {
-    ecma_make_throw_obj_completion_value (ret_value, ecma_new_standard_error (ECMA_ERROR_TYPE));
+    ecma_object_ptr_t exception_obj_p;
+    ecma_new_standard_error (exception_obj_p, ECMA_ERROR_TYPE);
+    ecma_make_throw_obj_completion_value (ret_value, exception_obj_p);
   }
   else
   {
@@ -476,12 +489,12 @@ ecma_op_function_has_instance (ecma_completion_value_t &ret_value, /**< out: com
  */
 void
 ecma_op_function_call (ecma_completion_value_t &ret_value, /**< out: completion value */
-                       ecma_object_t *func_obj_p, /**< Function object */
+                       const ecma_object_ptr_t& func_obj_p, /**< Function object */
                        const ecma_value_t& this_arg_value, /**< 'this' argument's value */
                        const ecma_value_t* arguments_list_p, /**< arguments list */
                        ecma_length_t arguments_list_len) /**< length of arguments list */
 {
-  JERRY_ASSERT(func_obj_p != NULL
+  JERRY_ASSERT(func_obj_p.is_not_null ()
                && !ecma_is_lexical_environment (func_obj_p));
   JERRY_ASSERT(ecma_op_is_callable (ecma_value_t (func_obj_p)));
   JERRY_ASSERT(arguments_list_len == 0 || arguments_list_p != NULL);
@@ -499,8 +512,8 @@ ecma_op_function_call (ecma_completion_value_t &ret_value, /**< out: completion
     ecma_property_t *scope_prop_p = ecma_get_internal_property (func_obj_p, ECMA_INTERNAL_PROPERTY_SCOPE);
     ecma_property_t *code_prop_p = ecma_get_internal_property (func_obj_p, ECMA_INTERNAL_PROPERTY_CODE);
 
-    ecma_object_t *scope_p = ECMA_GET_NON_NULL_POINTER (ecma_object_t,
-                                                        scope_prop_p->u.internal_property.value);
+    ecma_object_ptr_t scope_p;
+    scope_p.unpack_from (scope_prop_p->u.internal_property.value);
     uint32_t code_prop_value = code_prop_p->u.internal_property.value;
 
     bool is_strict;
@@ -517,7 +530,9 @@ ecma_op_function_call (ecma_completion_value_t &ret_value, /**< out: completion
              || ecma_is_value_null (this_arg_value))
     {
       // 2.
-      this_binding = ecma_builtin_get (ECMA_BUILTIN_ID_GLOBAL);
+      ecma_object_ptr_t global_obj_p;
+      ecma_builtin_get (global_obj_p, ECMA_BUILTIN_ID_GLOBAL);
+      this_binding = global_obj_p;
     }
     else
     {
@@ -530,7 +545,8 @@ ecma_op_function_call (ecma_completion_value_t &ret_value, /**< out: completion
     }
 
     // 5.
-    ecma_object_t *local_env_p = ecma_create_decl_lex_env (scope_p);
+    ecma_object_ptr_t local_env_p;
+    ecma_create_decl_lex_env (local_env_p, scope_p);
 
     // 9.
     ECMA_TRY_CATCH (ret_value, ecma_function_call_setup_args_variables, args_var_declaration_ret,
@@ -582,11 +598,11 @@ ecma_op_function_call (ecma_completion_value_t &ret_value, /**< out: completion
  */
 void
 ecma_op_function_construct (ecma_completion_value_t &ret_value, /**< out: completion value */
-                            ecma_object_t *func_obj_p, /**< Function object */
+                            const ecma_object_ptr_t& func_obj_p, /**< Function object */
                             const ecma_value_t* arguments_list_p, /**< arguments list */
                             ecma_length_t arguments_list_len) /**< length of arguments list */
 {
-  JERRY_ASSERT(func_obj_p != NULL
+  JERRY_ASSERT(func_obj_p.is_not_null ()
                && !ecma_is_lexical_environment (func_obj_p));
   JERRY_ASSERT(ecma_is_constructor (ecma_value_t (func_obj_p)));
   JERRY_ASSERT(arguments_list_len == 0 || arguments_list_p != NULL);
@@ -606,20 +622,21 @@ ecma_op_function_construct (ecma_completion_value_t &ret_value, /**< out: comple
                     ecma_op_object_get, func_obj_prototype_prop_value, func_obj_p, prototype_magic_string_p);
 
     //  6.
-    ecma_object_t *prototype_p;
+    ecma_object_ptr_t prototype_p;
     if (ecma_is_value_object (func_obj_prototype_prop_value))
     {
-      prototype_p = ecma_get_object_from_value (func_obj_prototype_prop_value);
+      ecma_get_object_from_value (prototype_p, func_obj_prototype_prop_value);
       ecma_ref_object (prototype_p);
     }
     else
     {
       // 7.
-      prototype_p = ecma_builtin_get (ECMA_BUILTIN_ID_OBJECT_PROTOTYPE);
+      ecma_builtin_get (prototype_p, ECMA_BUILTIN_ID_OBJECT_PROTOTYPE);
     }
 
     // 1., 2., 4.
-    ecma_object_t *obj_p = ecma_create_object (prototype_p, true, ECMA_OBJECT_TYPE_GENERAL);
+    ecma_object_ptr_t obj_p;
+    ecma_create_object (obj_p, prototype_p, true, ECMA_OBJECT_TYPE_GENERAL);
 
     // 3.
     ecma_property_t *class_prop_p = ecma_create_internal_property (obj_p, ECMA_INTERNAL_PROPERTY_CLASS);
@@ -671,7 +688,7 @@ ecma_op_function_construct (ecma_completion_value_t &ret_value, /**< out: comple
  */
 void
 ecma_op_function_declaration (ecma_completion_value_t &ret_value, /**< out: completion value */
-                              ecma_object_t *lex_env_p, /**< lexical environment */
+                              const ecma_object_ptr_t& lex_env_p, /**< lexical environment */
                               ecma_string_t *function_name_p, /**< function name */
                               opcode_counter_t function_code_opcode_idx, /**< index of first opcode of function code */
                               ecma_string_t* formal_parameter_list_p[], /**< formal parameters list */
@@ -681,11 +698,13 @@ ecma_op_function_declaration (ecma_completion_value_t &ret_value, /**< out: comp
                                                                   is declared in eval code */
 {
   // b.
-  ecma_object_t *func_obj_p = ecma_op_create_function_object (formal_parameter_list_p,
-                                                              formal_parameter_list_length,
-                                                              lex_env_p,
-                                                              is_strict,
-                                                              function_code_opcode_idx);
+  ecma_object_ptr_t func_obj_p;
+  ecma_op_create_function_object (func_obj_p,
+                                  formal_parameter_list_p,
+                                  formal_parameter_list_length,
+                                  lex_env_p,
+                                  is_strict,
+                                  function_code_opcode_idx);
 
   // c.
   bool func_already_declared = ecma_op_has_binding (lex_env_p, function_name_p);
@@ -704,7 +723,8 @@ ecma_op_function_declaration (ecma_completion_value_t &ret_value, /**< out: comp
   else if (ecma_is_lexical_environment_global (lex_env_p))
   {
     // e.
-    ecma_object_t *glob_obj_p = ecma_builtin_get (ECMA_BUILTIN_ID_GLOBAL);
+    ecma_object_ptr_t glob_obj_p;
+    ecma_builtin_get (glob_obj_p, ECMA_BUILTIN_ID_GLOBAL);
 
     ecma_property_t *existing_prop_p = ecma_op_object_get_property (glob_obj_p, function_name_p);
 
@@ -733,7 +753,9 @@ ecma_op_function_declaration (ecma_completion_value_t &ret_value, /**< out: comp
     }
     else if (existing_prop_p->type == ECMA_PROPERTY_NAMEDACCESSOR)
     {
-      ecma_make_throw_obj_completion_value (completion, ecma_new_standard_error (ECMA_ERROR_TYPE));
+      ecma_object_ptr_t exception_obj_p;
+      ecma_new_standard_error (exception_obj_p, ECMA_ERROR_TYPE);
+      ecma_make_throw_obj_completion_value (completion, exception_obj_p);
     }
     else
     {
@@ -742,7 +764,9 @@ ecma_op_function_declaration (ecma_completion_value_t &ret_value, /**< out: comp
       if (!ecma_is_property_writable (existing_prop_p)
           || !ecma_is_property_enumerable (existing_prop_p))
       {
-        ecma_make_throw_obj_completion_value (completion, ecma_new_standard_error (ECMA_ERROR_TYPE));
+        ecma_object_ptr_t exception_obj_p;
+        ecma_new_standard_error (exception_obj_p, ECMA_ERROR_TYPE);
+        ecma_make_throw_obj_completion_value (completion, exception_obj_p);
       }
     }
 
diff --git a/src/libecmaoperations/ecma-function-object.h b/src/libecmaoperations/ecma-function-object.h
index 0683f19c3..da741ce75 100644
--- a/src/libecmaoperations/ecma-function-object.h
+++ b/src/libecmaoperations/ecma-function-object.h
@@ -30,34 +30,35 @@
 extern bool ecma_op_is_callable (const ecma_value_t& value);
 extern bool ecma_is_constructor (const ecma_value_t& value);
 
-extern ecma_object_t*
-ecma_op_create_function_object (ecma_string_t* formal_parameter_list_p[],
+extern void
+ecma_op_create_function_object (ecma_object_ptr_t &ret_val,
+                                ecma_string_t* formal_parameter_list_p[],
                                 ecma_length_t formal_parameters_number,
-                                ecma_object_t *scope_p,
+                                const ecma_object_ptr_t& scope_p,
                                 bool is_strict,
                                 opcode_counter_t first_opcode_idx);
 
 extern void
 ecma_op_function_call (ecma_completion_value_t &ret_value,
-                       ecma_object_t *func_obj_p,
+                       const ecma_object_ptr_t& func_obj_p,
                        const ecma_value_t& this_arg_value,
                        const ecma_value_t* arguments_list_p,
                        ecma_length_t arguments_list_len);
 
 extern void
 ecma_op_function_construct (ecma_completion_value_t &ret_value,
-                            ecma_object_t *func_obj_p,
+                            const ecma_object_ptr_t& func_obj_p,
                             const ecma_value_t* arguments_list_p,
                             ecma_length_t arguments_list_len);
 
 extern void
 ecma_op_function_has_instance (ecma_completion_value_t &ret_value,
-                               ecma_object_t *func_obj_p,
+                               const ecma_object_ptr_t& func_obj_p,
                                const ecma_value_t& value);
 
 extern void
 ecma_op_function_declaration (ecma_completion_value_t &ret_value,
-                              ecma_object_t *lex_env_p,
+                              const ecma_object_ptr_t& lex_env_p,
                               ecma_string_t *function_name_p,
                               opcode_counter_t function_code_opcode_idx,
                               ecma_string_t* formal_parameter_list_p[],
diff --git a/src/libecmaoperations/ecma-get-put-value.c b/src/libecmaoperations/ecma-get-put-value.c
index 8b5bc59a1..bd1474051 100644
--- a/src/libecmaoperations/ecma-get-put-value.c
+++ b/src/libecmaoperations/ecma-get-put-value.c
@@ -45,21 +45,24 @@
  */
 void
 ecma_op_get_value_lex_env_base (ecma_completion_value_t &ret_value, /**< out: completion value */
-                                ecma_object_t *ref_base_lex_env_p, /**< reference's base (lexical environment) */
+                                const ecma_object_ptr_t& ref_base_lex_env_p, /**< reference's base
+                                                                              *   (lexical environment) */
                                 ecma_string_t *var_name_string_p, /**< variable name */
                                 bool is_strict) /**< flag indicating strict mode */
 {
-  const bool is_unresolvable_reference = (ref_base_lex_env_p == NULL);
+  const bool is_unresolvable_reference = (ref_base_lex_env_p.is_null ());
 
   // 3.
   if (unlikely (is_unresolvable_reference))
   {
-    ecma_make_throw_obj_completion_value (ret_value, ecma_new_standard_error (ECMA_ERROR_REFERENCE));
+    ecma_object_ptr_t exception_obj_p;
+    ecma_new_standard_error (exception_obj_p, ECMA_ERROR_REFERENCE);
+    ecma_make_throw_obj_completion_value (ret_value, exception_obj_p);
     return;
   }
 
   // 5.
-  JERRY_ASSERT(ref_base_lex_env_p != NULL
+  JERRY_ASSERT(ref_base_lex_env_p.is_not_null ()
                && ecma_is_lexical_environment (ref_base_lex_env_p));
 
   // 5.a
@@ -86,8 +89,14 @@ ecma_op_get_value_object_base (ecma_completion_value_t &ret_value, /**< out: com
   const bool has_primitive_base = (ecma_is_value_boolean (base)
                                    || ecma_is_value_number (base)
                                    || ecma_is_value_string (base));
-  const bool has_object_base = (ecma_is_value_object (base)
-                                && !(ecma_is_lexical_environment (ecma_get_object_from_value (base))));
+  bool has_object_base = false;
+  if (ecma_is_value_object (base))
+  {
+    ecma_object_ptr_t base_obj_p;
+    ecma_get_object_from_value (base_obj_p, base);
+
+    has_object_base = !ecma_is_lexical_environment (base_obj_p);
+  }
   const bool is_property_reference = has_primitive_base || has_object_base;
 
   JERRY_ASSERT (!is_unresolvable_reference);
@@ -98,8 +107,9 @@ ecma_op_get_value_object_base (ecma_completion_value_t &ret_value, /**< out: com
   {
     // 4.b case 1
 
-    ecma_object_t *obj_p = ecma_get_object_from_value (base);
-    JERRY_ASSERT(obj_p != NULL
+    ecma_object_ptr_t obj_p;
+    ecma_get_object_from_value (obj_p, base);
+    JERRY_ASSERT(obj_p.is_not_null ()
                  && !ecma_is_lexical_environment (obj_p));
 
     ecma_op_object_get (ret_value, obj_p, ECMA_GET_NON_NULL_POINTER (ecma_string_t,
@@ -110,8 +120,9 @@ ecma_op_get_value_object_base (ecma_completion_value_t &ret_value, /**< out: com
     // 4.b case 2
     ECMA_TRY_CATCH (ret_value, ecma_op_to_object, obj_base, base);
 
-    ecma_object_t *obj_p = ecma_get_object_from_value (obj_base);
-    JERRY_ASSERT (obj_p != NULL
+    ecma_object_ptr_t obj_p;
+    ecma_get_object_from_value (obj_p, obj_base);
+    JERRY_ASSERT (obj_p.is_not_null ()
                   && !ecma_is_lexical_environment (obj_p));
 
     ecma_op_object_get (ret_value, obj_p, ECMA_GET_NON_NULL_POINTER (ecma_string_t,
@@ -131,12 +142,13 @@ ecma_op_get_value_object_base (ecma_completion_value_t &ret_value, /**< out: com
  */
 void
 ecma_op_put_value_lex_env_base (ecma_completion_value_t &ret_value, /**< out: completion value */
-                                ecma_object_t *ref_base_lex_env_p, /**< reference's base (lexical environment) */
+                                const ecma_object_ptr_t& ref_base_lex_env_p, /**< reference's base
+                                                                              *   (lexical environment) */
                                 ecma_string_t *var_name_string_p, /**< variable name */
                                 bool is_strict, /**< flag indicating strict mode */
                                 const ecma_value_t& value) /**< ECMA-value */
 {
-  const bool is_unresolvable_reference = (ref_base_lex_env_p == NULL);
+  const bool is_unresolvable_reference = (ref_base_lex_env_p.is_null ());
 
   // 3.
   if (unlikely (is_unresolvable_reference))
@@ -144,13 +156,16 @@ ecma_op_put_value_lex_env_base (ecma_completion_value_t &ret_value, /**< out: co
     // 3.a.
     if (is_strict)
     {
-      ecma_make_throw_obj_completion_value (ret_value, ecma_new_standard_error (ECMA_ERROR_REFERENCE));
+      ecma_object_ptr_t exception_obj_p;
+      ecma_new_standard_error (exception_obj_p, ECMA_ERROR_REFERENCE);
+      ecma_make_throw_obj_completion_value (ret_value, exception_obj_p);
       return;
     }
     else
     {
       // 3.b.
-      ecma_object_t *global_object_p = ecma_builtin_get (ECMA_BUILTIN_ID_GLOBAL);
+      ecma_object_ptr_t global_object_p;
+      ecma_builtin_get (global_object_p, ECMA_BUILTIN_ID_GLOBAL);
 
       ecma_completion_value_t completion;
       ecma_op_object_put (completion,
@@ -170,7 +185,7 @@ ecma_op_put_value_lex_env_base (ecma_completion_value_t &ret_value, /**< out: co
   }
 
   // 5.
-  JERRY_ASSERT(ref_base_lex_env_p != NULL
+  JERRY_ASSERT(ref_base_lex_env_p.is_not_null ()
                && ecma_is_lexical_environment (ref_base_lex_env_p));
 
   // 5.a
@@ -193,7 +208,9 @@ ecma_reject_put (ecma_completion_value_t &ret_value, /**< out: completion value
 {
   if (is_throw)
   {
-    ecma_make_throw_obj_completion_value (ret_value, ecma_new_standard_error (ECMA_ERROR_TYPE));
+    ecma_object_ptr_t exception_obj_p;
+    ecma_new_standard_error (exception_obj_p, ECMA_ERROR_TYPE);
+    ecma_make_throw_obj_completion_value (ret_value, exception_obj_p);
   }
   else
   {
@@ -219,8 +236,14 @@ ecma_op_put_value_object_base (ecma_completion_value_t &ret_value, /**< out: com
   const bool has_primitive_base = (ecma_is_value_boolean (base)
                                    || ecma_is_value_number (base)
                                    || ecma_is_value_string (base));
-  const bool has_object_base = (ecma_is_value_object (base)
-                                && !(ecma_is_lexical_environment (ecma_get_object_from_value (base))));
+  bool has_object_base = false;
+  if (ecma_is_value_object (base))
+  {
+    ecma_object_ptr_t base_obj_p;
+    ecma_get_object_from_value (base_obj_p, base);
+
+    has_object_base = !ecma_is_lexical_environment (base_obj_p);
+  }
   const bool is_property_reference = has_primitive_base || has_object_base;
 
   JERRY_ASSERT (!is_unresolvable_reference);
@@ -231,8 +254,9 @@ ecma_op_put_value_object_base (ecma_completion_value_t &ret_value, /**< out: com
   {
     // 4.b case 1
 
-    ecma_object_t *obj_p = ecma_get_object_from_value (base);
-    JERRY_ASSERT (obj_p != NULL
+    ecma_object_ptr_t obj_p;
+    ecma_get_object_from_value (obj_p, base);
+    JERRY_ASSERT (obj_p.is_not_null ()
                   && !ecma_is_lexical_environment (obj_p));
 
     ECMA_TRY_CATCH (ret_value, ecma_op_object_put, put_ret_value, obj_p,
@@ -251,8 +275,9 @@ ecma_op_put_value_object_base (ecma_completion_value_t &ret_value, /**< out: com
     // sub_1.
     ECMA_TRY_CATCH (ret_value, ecma_op_to_object, obj_base, base);
 
-    ecma_object_t *obj_p = ecma_get_object_from_value (obj_base);
-    JERRY_ASSERT (obj_p != NULL
+    ecma_object_ptr_t obj_p;
+    ecma_get_object_from_value (obj_p, obj_base);
+    JERRY_ASSERT (obj_p.is_not_null ()
                   && !ecma_is_lexical_environment (obj_p));
 
     ecma_string_t *referenced_name_p = ECMA_GET_NON_NULL_POINTER (ecma_string_t,
@@ -284,9 +309,9 @@ ecma_op_put_value_object_base (ecma_completion_value_t &ret_value, /**< out: com
         // sub_6.
         JERRY_ASSERT (prop_p != NULL && prop_p->type == ECMA_PROPERTY_NAMEDACCESSOR);
 
-        ecma_object_t *setter_p = ECMA_GET_NON_NULL_POINTER(ecma_object_t,
-                                                            prop_p->u.named_accessor_property.set_p);
-        JERRY_ASSERT (setter_p != NULL);
+        ecma_object_ptr_t setter_p;
+        setter_p.unpack_from (prop_p->u.named_accessor_property.set_p);
+        JERRY_ASSERT (setter_p.is_not_null ());
 
         ECMA_TRY_CATCH (ret_value, ecma_op_function_call, call_ret, setter_p, base, &value, 1);
 
diff --git a/src/libecmaoperations/ecma-lex-env.c b/src/libecmaoperations/ecma-lex-env.c
index 8a3730504..5f5139df7 100644
--- a/src/libecmaoperations/ecma-lex-env.c
+++ b/src/libecmaoperations/ecma-lex-env.c
@@ -39,10 +39,10 @@
  * @return true / false
  */
 bool
-ecma_op_has_binding (ecma_object_t *lex_env_p, /**< lexical environment */
+ecma_op_has_binding (const ecma_object_ptr_t& lex_env_p, /**< lexical environment */
                      ecma_string_t *name_p) /**< argument N */
 {
-  JERRY_ASSERT(lex_env_p != NULL
+  JERRY_ASSERT(lex_env_p.is_not_null ()
                && ecma_is_lexical_environment (lex_env_p));
 
   if (ecma_get_lex_env_type (lex_env_p) == ECMA_LEXICAL_ENVIRONMENT_DECLARATIVE)
@@ -55,7 +55,8 @@ ecma_op_has_binding (ecma_object_t *lex_env_p, /**< lexical environment */
   {
     JERRY_ASSERT (ecma_get_lex_env_type (lex_env_p) == ECMA_LEXICAL_ENVIRONMENT_OBJECTBOUND);
 
-    ecma_object_t *binding_obj_p = ecma_get_lex_env_binding_object (lex_env_p);
+    ecma_object_ptr_t binding_obj_p;
+    ecma_get_lex_env_binding_object (binding_obj_p, lex_env_p);
 
     return (ecma_op_object_get_property (binding_obj_p, name_p) != NULL);
   }
@@ -71,11 +72,11 @@ ecma_op_has_binding (ecma_object_t *lex_env_p, /**< lexical environment */
  */
 void
 ecma_op_create_mutable_binding (ecma_completion_value_t &ret_value, /**< out: completion value */
-                                ecma_object_t *lex_env_p, /**< lexical environment */
+                                const ecma_object_ptr_t& lex_env_p, /**< lexical environment */
                                 ecma_string_t *name_p, /**< argument N */
                                 bool is_deletable) /**< argument D */
 {
-  JERRY_ASSERT(lex_env_p != NULL
+  JERRY_ASSERT(lex_env_p.is_not_null ()
                && ecma_is_lexical_environment (lex_env_p));
   JERRY_ASSERT(name_p != NULL);
 
@@ -89,7 +90,8 @@ ecma_op_create_mutable_binding (ecma_completion_value_t &ret_value, /**< out: co
   {
     JERRY_ASSERT (ecma_get_lex_env_type (lex_env_p) == ECMA_LEXICAL_ENVIRONMENT_OBJECTBOUND);
 
-    ecma_object_t *binding_obj_p = ecma_get_lex_env_binding_object (lex_env_p);
+    ecma_object_ptr_t binding_obj_p;
+    ecma_get_lex_env_binding_object (binding_obj_p, lex_env_p);
 
     ecma_property_descriptor_t prop_desc = ecma_make_empty_property_descriptor ();
     {
@@ -138,12 +140,12 @@ ecma_op_create_mutable_binding (ecma_completion_value_t &ret_value, /**< out: co
  */
 void
 ecma_op_set_mutable_binding (ecma_completion_value_t &ret_value, /**< out: completion value */
-                             ecma_object_t *lex_env_p, /**< lexical environment */
+                             const ecma_object_ptr_t& lex_env_p, /**< lexical environment */
                              ecma_string_t *name_p, /**< argument N */
                              const ecma_value_t& value, /**< argument V */
                              bool is_strict) /**< argument S */
 {
-  JERRY_ASSERT(lex_env_p != NULL
+  JERRY_ASSERT(lex_env_p.is_not_null ()
                && ecma_is_lexical_environment (lex_env_p));
   JERRY_ASSERT(name_p != NULL);
 
@@ -164,7 +166,9 @@ ecma_op_set_mutable_binding (ecma_completion_value_t &ret_value, /**< out: compl
 
     if (is_equal)
     {
-      ecma_make_throw_obj_completion_value (ret_value, ecma_builtin_get (ECMA_BUILTIN_ID_COMPACT_PROFILE_ERROR));
+      ecma_object_ptr_t cp_error_obj_p;
+      ecma_builtin_get (cp_error_obj_p, ECMA_BUILTIN_ID_COMPACT_PROFILE_ERROR);
+      ecma_make_throw_obj_completion_value (ret_value, cp_error_obj_p);
       return;
     }
 # endif /* CONFIG_ECMA_COMPACT_PROFILE */
@@ -178,7 +182,9 @@ ecma_op_set_mutable_binding (ecma_completion_value_t &ret_value, /**< out: compl
     }
     else if (is_strict)
     {
-      ecma_make_throw_obj_completion_value (ret_value, ecma_new_standard_error (ECMA_ERROR_TYPE));
+      ecma_object_ptr_t exception_obj_p;
+      ecma_new_standard_error (exception_obj_p, ECMA_ERROR_TYPE);
+      ecma_make_throw_obj_completion_value (ret_value, exception_obj_p);
       return;
     }
   }
@@ -186,7 +192,8 @@ ecma_op_set_mutable_binding (ecma_completion_value_t &ret_value, /**< out: compl
   {
     JERRY_ASSERT (ecma_get_lex_env_type (lex_env_p) == ECMA_LEXICAL_ENVIRONMENT_OBJECTBOUND);
 
-    ecma_object_t *binding_obj_p = ecma_get_lex_env_binding_object (lex_env_p);
+    ecma_object_ptr_t binding_obj_p;
+    ecma_get_lex_env_binding_object (binding_obj_p, lex_env_p);
 
     ecma_completion_value_t completion;
     ecma_op_object_put (completion,
@@ -220,11 +227,11 @@ ecma_op_set_mutable_binding (ecma_completion_value_t &ret_value, /**< out: compl
  */
 void
 ecma_op_get_binding_value (ecma_completion_value_t &ret_value, /**< out: completion value */
-                           ecma_object_t *lex_env_p, /**< lexical environment */
+                           const ecma_object_ptr_t& lex_env_p, /**< lexical environment */
                            ecma_string_t *name_p, /**< argument N */
                            bool is_strict) /**< argument S */
 {
-  JERRY_ASSERT(lex_env_p != NULL
+  JERRY_ASSERT(lex_env_p.is_not_null ()
                && ecma_is_lexical_environment (lex_env_p));
   JERRY_ASSERT(name_p != NULL);
 
@@ -245,7 +252,9 @@ ecma_op_get_binding_value (ecma_completion_value_t &ret_value, /**< out: complet
 
     if (is_equal)
     {
-      ecma_make_throw_obj_completion_value (ret_value, ecma_builtin_get (ECMA_BUILTIN_ID_COMPACT_PROFILE_ERROR));
+      ecma_object_ptr_t cp_error_obj_p;
+      ecma_builtin_get (cp_error_obj_p, ECMA_BUILTIN_ID_COMPACT_PROFILE_ERROR);
+      ecma_make_throw_obj_completion_value (ret_value, cp_error_obj_p);
       return;
     }
 # endif /* CONFIG_ECMA_COMPACT_PROFILE */
@@ -263,7 +272,9 @@ ecma_op_get_binding_value (ecma_completion_value_t &ret_value, /**< out: complet
       /* unitialized immutable binding */
       if (is_strict)
       {
-        ecma_make_throw_obj_completion_value (ret_value, ecma_new_standard_error (ECMA_ERROR_REFERENCE));
+        ecma_object_ptr_t exception_obj_p;
+        ecma_new_standard_error (exception_obj_p, ECMA_ERROR_REFERENCE);
+        ecma_make_throw_obj_completion_value (ret_value, exception_obj_p);
         return;
       }
       else
@@ -282,13 +293,16 @@ ecma_op_get_binding_value (ecma_completion_value_t &ret_value, /**< out: complet
   {
     JERRY_ASSERT (ecma_get_lex_env_type (lex_env_p) == ECMA_LEXICAL_ENVIRONMENT_OBJECTBOUND);
 
-    ecma_object_t *binding_obj_p = ecma_get_lex_env_binding_object (lex_env_p);
+    ecma_object_ptr_t binding_obj_p;
+    ecma_get_lex_env_binding_object (binding_obj_p, lex_env_p);
 
     if (ecma_op_object_get_property (binding_obj_p, name_p) == NULL)
     {
       if (is_strict)
       {
-        ecma_make_throw_obj_completion_value (ret_value, ecma_new_standard_error (ECMA_ERROR_REFERENCE));
+        ecma_object_ptr_t exception_obj_p;
+        ecma_new_standard_error (exception_obj_p, ECMA_ERROR_REFERENCE);
+        ecma_make_throw_obj_completion_value (ret_value, exception_obj_p);
         return;
       }
       else
@@ -313,10 +327,10 @@ ecma_op_get_binding_value (ecma_completion_value_t &ret_value, /**< out: complet
  */
 void
 ecma_op_delete_binding (ecma_completion_value_t &ret_value, /**< out: completion value */
-                        ecma_object_t *lex_env_p, /**< lexical environment */
+                        const ecma_object_ptr_t& lex_env_p, /**< lexical environment */
                         ecma_string_t *name_p) /**< argument N */
 {
-  JERRY_ASSERT(lex_env_p != NULL
+  JERRY_ASSERT(lex_env_p.is_not_null ()
                && ecma_is_lexical_environment (lex_env_p));
   JERRY_ASSERT(name_p != NULL);
 
@@ -352,7 +366,8 @@ ecma_op_delete_binding (ecma_completion_value_t &ret_value, /**< out: completion
   {
     JERRY_ASSERT (ecma_get_lex_env_type (lex_env_p) == ECMA_LEXICAL_ENVIRONMENT_OBJECTBOUND);
 
-    ecma_object_t *binding_obj_p = ecma_get_lex_env_binding_object (lex_env_p);
+    ecma_object_ptr_t binding_obj_p;
+    ecma_get_lex_env_binding_object (binding_obj_p, lex_env_p);
 
     ecma_op_object_delete (ret_value, binding_obj_p, name_p, false);
   }
@@ -368,9 +383,9 @@ ecma_op_delete_binding (ecma_completion_value_t &ret_value, /**< out: completion
  */
 void
 ecma_op_implicit_this_value (ecma_completion_value_t &ret_value, /**< out: completion value */
-                             ecma_object_t *lex_env_p) /**< lexical environment */
+                             const ecma_object_ptr_t& lex_env_p) /**< lexical environment */
 {
-  JERRY_ASSERT(lex_env_p != NULL
+  JERRY_ASSERT(lex_env_p.is_not_null ()
                && ecma_is_lexical_environment (lex_env_p));
 
   if (ecma_get_lex_env_type (lex_env_p) == ECMA_LEXICAL_ENVIRONMENT_DECLARATIVE)
@@ -383,7 +398,8 @@ ecma_op_implicit_this_value (ecma_completion_value_t &ret_value, /**< out: compl
 
     if (ecma_get_lex_env_provide_this (lex_env_p))
     {
-      ecma_object_t *binding_obj_p = ecma_get_lex_env_binding_object (lex_env_p);
+      ecma_object_ptr_t binding_obj_p;
+      ecma_get_lex_env_binding_object (binding_obj_p, lex_env_p);
       ecma_ref_object (binding_obj_p);
 
       ecma_make_normal_completion_value (ret_value, ecma_value_t (binding_obj_p));
@@ -401,10 +417,10 @@ ecma_op_implicit_this_value (ecma_completion_value_t &ret_value, /**< out: compl
  * See also: ECMA-262 v5, 10.2.1
  */
 void
-ecma_op_create_immutable_binding (ecma_object_t *lex_env_p, /**< lexical environment */
+ecma_op_create_immutable_binding (const ecma_object_ptr_t& lex_env_p, /**< lexical environment */
                                   ecma_string_t *name_p) /**< argument N */
 {
-  JERRY_ASSERT(lex_env_p != NULL
+  JERRY_ASSERT(lex_env_p.is_not_null ()
                && ecma_is_lexical_environment (lex_env_p));
   JERRY_ASSERT (ecma_get_lex_env_type (lex_env_p) == ECMA_LEXICAL_ENVIRONMENT_DECLARATIVE);
 
@@ -433,11 +449,11 @@ ecma_op_create_immutable_binding (ecma_object_t *lex_env_p, /**< lexical environ
  * See also: ECMA-262 v5, 10.2.1
  */
 void
-ecma_op_initialize_immutable_binding (ecma_object_t *lex_env_p, /**< lexical environment */
+ecma_op_initialize_immutable_binding (const ecma_object_ptr_t& lex_env_p, /**< lexical environment */
                                       ecma_string_t *name_p, /**< argument N */
                                       const ecma_value_t& value) /**< argument V */
 {
-  JERRY_ASSERT(lex_env_p != NULL
+  JERRY_ASSERT(lex_env_p.is_not_null ()
                && ecma_is_lexical_environment (lex_env_p));
   JERRY_ASSERT (ecma_get_lex_env_type (lex_env_p) == ECMA_LEXICAL_ENVIRONMENT_DECLARATIVE);
 
@@ -460,17 +476,18 @@ ecma_op_initialize_immutable_binding (ecma_object_t *lex_env_p, /**< lexical env
  *
  * @return pointer to created lexical environment
  */
-ecma_object_t*
-ecma_op_create_global_environment (ecma_object_t *glob_obj_p) /**< the Global object */
+void
+ecma_op_create_global_environment (ecma_object_ptr_t &glob_env_p, /**< out: object pointer */
+                                   const ecma_object_ptr_t& glob_obj_p) /**< the Global object */
 {
+  ecma_object_ptr_t null_pointer;
+
 #ifdef CONFIG_ECMA_GLOBAL_ENVIRONMENT_DECLARATIVE
   (void) glob_obj_p;
-  ecma_object_t *glob_env_p = ecma_create_decl_lex_env (NULL);
+  ecma_create_decl_lex_env (glob_env_p, null_pointer);
 #else /* !CONFIG_ECMA_GLOBAL_ENVIRONMENT_DECLARATIVE */
-  ecma_object_t *glob_env_p = ecma_create_object_lex_env (NULL, glob_obj_p, false);
+  ecma_create_object_lex_env (glob_env_p, null_pointer, glob_obj_p, false);
 #endif /* !CONFIG_ECMA_GLOBAL_ENVIRONMENT_DECLARATIVE */
-
-  return glob_env_p;
 } /* ecma_op_create_global_environment */
 
 /**
@@ -480,16 +497,17 @@ ecma_op_create_global_environment (ecma_object_t *glob_obj_p) /**< the Global ob
  *         false - otherwise.
  */
 bool
-ecma_is_lexical_environment_global (ecma_object_t *lex_env_p) /**< lexical environment */
+ecma_is_lexical_environment_global (const ecma_object_ptr_t& lex_env_p) /**< lexical environment */
 {
-  JERRY_ASSERT(lex_env_p != NULL
+  JERRY_ASSERT(lex_env_p.is_not_null ()
                && ecma_is_lexical_environment (lex_env_p));
 
   ecma_lexical_environment_type_t type = ecma_get_lex_env_type (lex_env_p);
 
   if (type == ECMA_LEXICAL_ENVIRONMENT_OBJECTBOUND)
   {
-    ecma_object_t *binding_obj_p = ecma_get_lex_env_binding_object (lex_env_p);
+    ecma_object_ptr_t binding_obj_p;
+    ecma_get_lex_env_binding_object (binding_obj_p, lex_env_p);
 
     return ecma_builtin_is (binding_obj_p, ECMA_BUILTIN_ID_GLOBAL);
   }
diff --git a/src/libecmaoperations/ecma-lex-env.h b/src/libecmaoperations/ecma-lex-env.h
index 0163e1470..519acde37 100644
--- a/src/libecmaoperations/ecma-lex-env.h
+++ b/src/libecmaoperations/ecma-lex-env.h
@@ -33,7 +33,7 @@
 /* ECMA-262 v5, 8.7.1 and 8.7.2 */
 extern void
 ecma_op_get_value_lex_env_base (ecma_completion_value_t &ret_value,
-                                ecma_object_t *ref_base_lex_env_p,
+                                const ecma_object_ptr_t& ref_base_lex_env_p,
                                 ecma_string_t *var_name_string_p,
                                 bool is_strict);
 extern void
@@ -41,7 +41,7 @@ ecma_op_get_value_object_base (ecma_completion_value_t &ret_value,
                                 const ecma_reference_t& ref);
 extern void
 ecma_op_put_value_lex_env_base (ecma_completion_value_t &ret_value,
-                                ecma_object_t *ref_base_lex_env_p,
+                                const ecma_object_ptr_t& ref_base_lex_env_p,
                                 ecma_string_t *var_name_string_p,
                                 bool is_strict,
                                 const ecma_value_t& value);
@@ -51,41 +51,41 @@ ecma_op_put_value_object_base (ecma_completion_value_t &ret_value,
                                const ecma_value_t& value);
 
 /* ECMA-262 v5, Table 17. Abstract methods of Environment Records */
-extern bool ecma_op_has_binding (ecma_object_t *lex_env_p,
+extern bool ecma_op_has_binding (const ecma_object_ptr_t& lex_env_p,
                                  ecma_string_t *name_p);
 extern void
 ecma_op_create_mutable_binding (ecma_completion_value_t &ret_value,
-                                ecma_object_t *lex_env_p,
+                                const ecma_object_ptr_t& lex_env_p,
                                 ecma_string_t *name_p,
                                 bool is_deletable);
 extern void
 ecma_op_set_mutable_binding (ecma_completion_value_t &ret_value,
-                             ecma_object_t *lex_env_p,
+                             const ecma_object_ptr_t& lex_env_p,
                              ecma_string_t *name_p,
                              const ecma_value_t& value,
                              bool is_strict);
 extern void
 ecma_op_get_binding_value (ecma_completion_value_t &ret_value,
-                           ecma_object_t *lex_env_p,
+                           const ecma_object_ptr_t& lex_env_p,
                            ecma_string_t *name_p,
                            bool is_strict);
 extern void
 ecma_op_delete_binding (ecma_completion_value_t &ret_value,
-                        ecma_object_t *lex_env_p,
+                        const ecma_object_ptr_t& lex_env_p,
                         ecma_string_t *name_p);
 extern void
 ecma_op_implicit_this_value (ecma_completion_value_t &ret_value,
-                             ecma_object_t *lex_env_p);
+                             const ecma_object_ptr_t& lex_env_p);
 
 /* ECMA-262 v5, Table 18. Additional methods of Declarative Environment Records */
-extern void ecma_op_create_immutable_binding (ecma_object_t *lex_env_p,
+extern void ecma_op_create_immutable_binding (const ecma_object_ptr_t& lex_env_p,
                                               ecma_string_t *name_p);
-extern void ecma_op_initialize_immutable_binding (ecma_object_t *lex_env_p,
+extern void ecma_op_initialize_immutable_binding (const ecma_object_ptr_t& lex_env_p,
                                                   ecma_string_t *name_p,
                                                   const ecma_value_t& value);
 
-extern ecma_object_t* ecma_op_create_global_environment (ecma_object_t *glob_obj_p);
-extern bool ecma_is_lexical_environment_global (ecma_object_t *lex_env_p);
+extern void ecma_op_create_global_environment (ecma_object_ptr_t &ret_val, const ecma_object_ptr_t& glob_obj_p);
+extern bool ecma_is_lexical_environment_global (const ecma_object_ptr_t& lex_env_p);
 
 /**
  * @}
diff --git a/src/libecmaoperations/ecma-number-object.c b/src/libecmaoperations/ecma-number-object.c
index e5201c85e..56aea30a7 100644
--- a/src/libecmaoperations/ecma-number-object.c
+++ b/src/libecmaoperations/ecma-number-object.c
@@ -57,14 +57,15 @@ ecma_op_create_number_object (ecma_completion_value_t &ret_value, /**< out: comp
   ecma_number_t *prim_value_p = ecma_get_number_from_value (num_value);
 
 #ifndef CONFIG_ECMA_COMPACT_PROFILE_DISABLE_NUMBER_BUILTIN
-  ecma_object_t *prototype_obj_p = ecma_builtin_get (ECMA_BUILTIN_ID_NUMBER_PROTOTYPE);
+  ecma_object_ptr_t prototype_obj_p;
+  ecma_builtin_get (prototype_obj_p, ECMA_BUILTIN_ID_NUMBER_PROTOTYPE);
 #else /* !CONFIG_ECMA_COMPACT_PROFILE_DISABLE_NUMBER_BUILTIN */
-  ecma_object_t *prototype_obj_p = ecma_builtin_get (ECMA_BUILTIN_ID_OBJECT_PROTOTYPE);
+  ecma_object_ptr_t prototype_obj_p;
+  ecma_builtin_get (prototype_obj_p, ECMA_BUILTIN_ID_OBJECT_PROTOTYPE);
 #endif /* CONFIG_ECMA_COMPACT_PROFILE_DISABLE_NUMBER_BUILTIN */
 
-  ecma_object_t *obj_p = ecma_create_object (prototype_obj_p,
-                                             true,
-                                             ECMA_OBJECT_TYPE_GENERAL);
+  ecma_object_ptr_t obj_p;
+  ecma_create_object (obj_p, prototype_obj_p, true, ECMA_OBJECT_TYPE_GENERAL);
   ecma_deref_object (prototype_obj_p);
 
   ecma_property_t *class_prop_p = ecma_create_internal_property (obj_p, ECMA_INTERNAL_PROPERTY_CLASS);
diff --git a/src/libecmaoperations/ecma-objects-arguments.c b/src/libecmaoperations/ecma-objects-arguments.c
index 83100ab96..04e177c10 100644
--- a/src/libecmaoperations/ecma-objects-arguments.c
+++ b/src/libecmaoperations/ecma-objects-arguments.c
@@ -40,9 +40,10 @@
  *
  * @return pointer to newly created Arguments object
  */
-ecma_object_t*
-ecma_create_arguments_object (ecma_object_t *func_obj_p, /**< callee function */
-                              ecma_object_t *lex_env_p, /**< lexical environment the Arguments
+void
+ecma_create_arguments_object (ecma_object_ptr_t &obj_p, /**< out: object pointer */
+                              const ecma_object_ptr_t& func_obj_p, /**< callee function */
+                              const ecma_object_ptr_t& lex_env_p, /**< lexical environment the Arguments
                                                              object is created for */
                               ecma_collection_iterator_t *formal_params_iter_p, /**< formal parameters
                                                                                      collection iterator */
@@ -55,9 +56,10 @@ ecma_create_arguments_object (ecma_object_t *func_obj_p, /**< callee function */
   *len_p = ecma_uint32_to_number (arguments_list_length);
 
   // 2., 3., 6.
-  ecma_object_t *prototype_p = ecma_builtin_get (ECMA_BUILTIN_ID_OBJECT_PROTOTYPE);
+  ecma_object_ptr_t prototype_p;
+  ecma_builtin_get (prototype_p, ECMA_BUILTIN_ID_OBJECT_PROTOTYPE);
 
-  ecma_object_t *obj_p = ecma_create_object (prototype_p, true, ECMA_OBJECT_TYPE_GENERAL);
+  ecma_create_object (obj_p, prototype_p, true, ECMA_OBJECT_TYPE_GENERAL);
 
   ecma_deref_object (prototype_p);
 
@@ -130,7 +132,8 @@ ecma_create_arguments_object (ecma_object_t *func_obj_p, /**< callee function */
       && formal_params_number > 0)
   {
     // 8.
-    ecma_object_t *map_p = ecma_op_create_object_object_noarg ();
+    ecma_object_ptr_t map_p;
+    ecma_op_create_object_object_noarg (map_p);
 
     // 11.c
     MEM_DEFINE_LOCAL_ARRAY (formal_params, formal_params_number, ecma_string_t *);
@@ -197,12 +200,18 @@ ecma_create_arguments_object (ecma_object_t *func_obj_p, /**< callee function */
 
     ecma_property_t *parameters_map_prop_p = ecma_create_internal_property (obj_p,
                                                                             ECMA_INTERNAL_PROPERTY_PARAMETERS_MAP);
-    ECMA_SET_POINTER(parameters_map_prop_p->u.internal_property.value, map_p);
+    {
+      ecma_object_t *map_tmp_p = (ecma_object_t*) map_p;
+      ECMA_SET_POINTER(parameters_map_prop_p->u.internal_property.value, map_tmp_p);
+    }
     ecma_gc_update_may_ref_younger_object_flag_by_object (obj_p, map_p);
 
     ecma_property_t *scope_prop_p = ecma_create_internal_property (map_p,
                                                                    ECMA_INTERNAL_PROPERTY_SCOPE);
-    ECMA_SET_POINTER(scope_prop_p->u.internal_property.value, lex_env_p);
+    {
+      ecma_object_t *lex_env_tmp_p = (ecma_object_t *) lex_env_p;
+      ECMA_SET_POINTER(scope_prop_p->u.internal_property.value, lex_env_tmp_p);
+    }
     ecma_gc_update_may_ref_younger_object_flag_by_object (map_p, lex_env_p);
 
     ecma_deref_object (map_p);
@@ -239,16 +248,17 @@ ecma_create_arguments_object (ecma_object_t *func_obj_p, /**< callee function */
   }
   else
   {
-    ecma_object_t *thrower_p = ecma_builtin_get (ECMA_BUILTIN_ID_TYPE_ERROR_THROWER);
+    ecma_object_ptr_t thrower_p;
+    ecma_builtin_get (thrower_p, ECMA_BUILTIN_ID_TYPE_ERROR_THROWER);
 
     // 14.
     prop_desc = ecma_make_empty_property_descriptor ();
     {
       prop_desc.is_get_defined = true;
-      prop_desc.get_p = thrower_p;
+      prop_desc.get_p = (ecma_object_t*) thrower_p;
 
       prop_desc.is_set_defined = true;
-      prop_desc.set_p = thrower_p;
+      prop_desc.set_p = (ecma_object_t*) thrower_p;
 
       prop_desc.is_enumerable_defined = true;
       prop_desc.is_enumerable = false;
@@ -271,8 +281,6 @@ ecma_create_arguments_object (ecma_object_t *func_obj_p, /**< callee function */
     ecma_deref_ecma_string (caller_magic_string_p);
     ecma_deref_object (thrower_p);
   }
-
-  return obj_p;
 } /* ecma_create_arguments_object */
 
 /**
@@ -283,15 +291,15 @@ ecma_create_arguments_object (ecma_object_t *func_obj_p, /**< callee function */
  */
 static void
 ecma_arguments_get_mapped_arg_value (ecma_completion_value_t &ret_value, /**< out: completion value */
-                                     ecma_object_t *map_p, /**< [[ParametersMap]] object */
+                                     const ecma_object_ptr_t& map_p, /**< [[ParametersMap]] object */
                                      ecma_property_t *arg_name_prop_p) /**< property of [[ParametersMap]]
                                                                             corresponding to index and value
                                                                             equal to mapped argument's name */
 {
   ecma_property_t *scope_prop_p = ecma_get_internal_property (map_p, ECMA_INTERNAL_PROPERTY_SCOPE);
-  ecma_object_t *lex_env_p = ECMA_GET_NON_NULL_POINTER (ecma_object_t,
-                                                        scope_prop_p->u.internal_property.value);
-  JERRY_ASSERT(lex_env_p != NULL
+  ecma_object_ptr_t lex_env_p;
+  lex_env_p.unpack_from (scope_prop_p->u.internal_property.value);
+  JERRY_ASSERT(lex_env_p.is_not_null ()
                && ecma_is_lexical_environment (lex_env_p));
 
   ecma_value_t arg_name_prop_value;
@@ -315,13 +323,13 @@ ecma_arguments_get_mapped_arg_value (ecma_completion_value_t &ret_value, /**< ou
  */
 void
 ecma_op_arguments_object_get (ecma_completion_value_t &ret_value, /**< out: completion value */
-                              ecma_object_t *obj_p, /**< the object */
+                              const ecma_object_ptr_t& obj_p, /**< the object */
                               ecma_string_t *property_name_p) /**< property name */
 {
   // 1.
   ecma_property_t *map_prop_p = ecma_get_internal_property (obj_p, ECMA_INTERNAL_PROPERTY_PARAMETERS_MAP);
-  ecma_object_t *map_p = ECMA_GET_NON_NULL_POINTER (ecma_object_t,
-                                                    map_prop_p->u.internal_property.value);
+  ecma_object_ptr_t map_p;
+  map_p.unpack_from (map_prop_p->u.internal_property.value);
 
   // 2.
   ecma_property_t *mapped_prop_p = ecma_op_object_get_own_property (map_p, property_name_p);
@@ -352,7 +360,7 @@ ecma_op_arguments_object_get (ecma_completion_value_t &ret_value, /**< out: comp
  *         Returned value must be freed with ecma_free_completion_value
  */
 ecma_property_t*
-ecma_op_arguments_object_get_own_property (ecma_object_t *obj_p, /**< the object */
+ecma_op_arguments_object_get_own_property (const ecma_object_ptr_t& obj_p, /**< the object */
                                            ecma_string_t *property_name_p) /**< property name */
 {
   // 1.
@@ -366,8 +374,8 @@ ecma_op_arguments_object_get_own_property (ecma_object_t *obj_p, /**< the object
 
   // 3.
   ecma_property_t *map_prop_p = ecma_get_internal_property (obj_p, ECMA_INTERNAL_PROPERTY_PARAMETERS_MAP);
-  ecma_object_t *map_p = ECMA_GET_NON_NULL_POINTER (ecma_object_t,
-                                                    map_prop_p->u.internal_property.value);
+  ecma_object_ptr_t map_p;
+  map_p.unpack_from (map_prop_p->u.internal_property.value);
 
   // 4.
   ecma_property_t *mapped_prop_p = ecma_op_object_get_own_property (map_p, property_name_p);
@@ -403,7 +411,7 @@ ecma_op_arguments_object_get_own_property (ecma_object_t *obj_p, /**< the object
  */
 void
 ecma_op_arguments_object_define_own_property (ecma_completion_value_t &ret_value, /**< out: completion value */
-                                              ecma_object_t *obj_p, /**< the object */
+                                              const ecma_object_ptr_t& obj_p, /**< the object */
                                               ecma_string_t *property_name_p, /**< property name */
                                               const ecma_property_descriptor_t* property_desc_p, /**< property
                                                                                                   *   descriptor */
@@ -411,8 +419,8 @@ ecma_op_arguments_object_define_own_property (ecma_completion_value_t &ret_value
 {
   // 1.
   ecma_property_t *map_prop_p = ecma_get_internal_property (obj_p, ECMA_INTERNAL_PROPERTY_PARAMETERS_MAP);
-  ecma_object_t *map_p = ECMA_GET_NON_NULL_POINTER (ecma_object_t,
-                                                    map_prop_p->u.internal_property.value);
+  ecma_object_ptr_t map_p;
+  map_p.unpack_from (map_prop_p->u.internal_property.value);
 
   // 2.
   ecma_property_t *mapped_prop_p = ecma_op_object_get_own_property (map_p, property_name_p);
@@ -494,14 +502,14 @@ ecma_op_arguments_object_define_own_property (ecma_completion_value_t &ret_value
  */
 void
 ecma_op_arguments_object_delete (ecma_completion_value_t &ret_value, /**< out: completion value */
-                                 ecma_object_t *obj_p, /**< the object */
+                                 const ecma_object_ptr_t& obj_p, /**< the object */
                                  ecma_string_t *property_name_p, /**< property name */
                                  bool is_throw) /**< flag that controls failure handling */
 {
   // 1.
   ecma_property_t *map_prop_p = ecma_get_internal_property (obj_p, ECMA_INTERNAL_PROPERTY_PARAMETERS_MAP);
-  ecma_object_t *map_p = ECMA_GET_NON_NULL_POINTER (ecma_object_t,
-                                                    map_prop_p->u.internal_property.value);
+  ecma_object_ptr_t map_p;
+  map_p.unpack_from (map_prop_p->u.internal_property.value);
 
   // 2.
   ecma_property_t *mapped_prop_p = ecma_op_object_get_own_property (map_p, property_name_p);
diff --git a/src/libecmaoperations/ecma-objects-arguments.h b/src/libecmaoperations/ecma-objects-arguments.h
index 32aa48c06..7bfe13336 100644
--- a/src/libecmaoperations/ecma-objects-arguments.h
+++ b/src/libecmaoperations/ecma-objects-arguments.h
@@ -20,9 +20,10 @@
 #include "ecma-helpers.h"
 #include "ecma-value.h"
 
-extern ecma_object_t*
-ecma_create_arguments_object (ecma_object_t *func_obj_p,
-                              ecma_object_t *lex_env_p,
+extern void
+ecma_create_arguments_object (ecma_object_ptr_t &ret_val,
+                              const ecma_object_ptr_t& func_obj_p,
+                              const ecma_object_ptr_t& lex_env_p,
                               ecma_collection_iterator_t *formal_params_iter_p,
                               const ecma_value_t *arguments_list_p,
                               ecma_length_t arguments_list_length,
@@ -30,19 +31,19 @@ ecma_create_arguments_object (ecma_object_t *func_obj_p,
 
 extern void
 ecma_op_arguments_object_get (ecma_completion_value_t &ret_value,
-                              ecma_object_t *obj_p,
+                              const ecma_object_ptr_t& obj_p,
                               ecma_string_t *property_name_p);
 extern ecma_property_t*
-ecma_op_arguments_object_get_own_property (ecma_object_t *obj_p,
+ecma_op_arguments_object_get_own_property (const ecma_object_ptr_t& obj_p,
                                            ecma_string_t *property_name_p);
 extern void
 ecma_op_arguments_object_delete (ecma_completion_value_t &ret_value,
-                                 ecma_object_t *obj_p,
+                                 const ecma_object_ptr_t& obj_p,
                                  ecma_string_t *property_name_p,
                                  bool is_throw);
 extern void
 ecma_op_arguments_object_define_own_property (ecma_completion_value_t &ret_value,
-                                              ecma_object_t *obj_p,
+                                              const ecma_object_ptr_t& obj_p,
                                               ecma_string_t *property_name_p,
                                               const ecma_property_descriptor_t* property_desc_p,
                                               bool is_throw);
diff --git a/src/libecmaoperations/ecma-objects-general.c b/src/libecmaoperations/ecma-objects-general.c
index 63974b3f4..57122f68e 100644
--- a/src/libecmaoperations/ecma-objects-general.c
+++ b/src/libecmaoperations/ecma-objects-general.c
@@ -42,7 +42,9 @@ ecma_reject (ecma_completion_value_t &ret_value, /**< out: completion value */
 {
   if (is_throw)
   {
-    ecma_make_throw_obj_completion_value (ret_value, ecma_new_standard_error (ECMA_ERROR_TYPE));
+    ecma_object_ptr_t exception_obj_p;
+    ecma_new_standard_error (exception_obj_p, ECMA_ERROR_TYPE);
+    ecma_make_throw_obj_completion_value (ret_value, exception_obj_p);
   }
   else
   {
@@ -57,20 +59,19 @@ ecma_reject (ecma_completion_value_t &ret_value, /**< out: completion value */
  *
  * @return pointer to newly created 'Object' object
  */
-ecma_object_t*
-ecma_op_create_object_object_noarg (void)
+void
+ecma_op_create_object_object_noarg (ecma_object_ptr_t &obj_p) /**< out: object pointer */
 {
-  ecma_object_t *object_prototype_p = ecma_builtin_get (ECMA_BUILTIN_ID_OBJECT_PROTOTYPE);
+  ecma_object_ptr_t object_prototype_p;
+  ecma_builtin_get (object_prototype_p, ECMA_BUILTIN_ID_OBJECT_PROTOTYPE);
 
   // 3., 4., 6., 7.
-  ecma_object_t *obj_p = ecma_create_object (object_prototype_p, true, ECMA_OBJECT_TYPE_GENERAL);
+  ecma_create_object (obj_p, object_prototype_p, true, ECMA_OBJECT_TYPE_GENERAL);
 
   ecma_deref_object (object_prototype_p);
 
   ecma_property_t *class_prop_p = ecma_create_internal_property (obj_p, ECMA_INTERNAL_PROPERTY_CLASS);
   class_prop_p->u.internal_property.value = ECMA_MAGIC_STRING_OBJECT_UL;
-
-  return obj_p;
 } /* ecma_op_create_object_object_noarg */
 
 /**
@@ -100,7 +101,8 @@ ecma_op_create_object_object_arg (ecma_completion_value_t &ret_value, /**< out:
     JERRY_ASSERT (ecma_is_value_undefined (value)
                   || ecma_is_value_null (value));
 
-    ecma_object_t *obj_p = ecma_op_create_object_object_noarg ();
+    ecma_object_ptr_t obj_p;
+    ecma_op_create_object_object_noarg (obj_p);
 
     ecma_make_normal_completion_value (ret_value, ecma_value_t (obj_p));
   }
@@ -118,10 +120,10 @@ ecma_op_create_object_object_arg (ecma_completion_value_t &ret_value, /**< out:
  */
 void
 ecma_op_general_object_get (ecma_completion_value_t &ret_value, /**< out: completion value */
-                            ecma_object_t *obj_p, /**< the object */
+                            const ecma_object_ptr_t& obj_p, /**< the object */
                             ecma_string_t *property_name_p) /**< property name */
 {
-  JERRY_ASSERT(obj_p != NULL
+  JERRY_ASSERT(obj_p.is_not_null ()
                && !ecma_is_lexical_environment (obj_p));
   JERRY_ASSERT(property_name_p != NULL);
 
@@ -149,11 +151,11 @@ ecma_op_general_object_get (ecma_completion_value_t &ret_value, /**< out: comple
   else
   {
     // 4.
-    ecma_object_t *getter_p = ECMA_GET_POINTER (ecma_object_t,
-                                                prop_p->u.named_accessor_property.get_p);
+    ecma_object_ptr_t getter_p;
+    getter_p.unpack_from (prop_p->u.named_accessor_property.get_p, true);
 
     // 5.
-    if (getter_p == NULL)
+    if (getter_p.is_null ())
     {
       ecma_make_simple_completion_value (ret_value, ECMA_SIMPLE_VALUE_UNDEFINED);
     }
@@ -179,10 +181,10 @@ ecma_op_general_object_get (ecma_completion_value_t &ret_value, /**< out: comple
  *         NULL (i.e. ecma-undefined) - otherwise.
  */
 ecma_property_t*
-ecma_op_general_object_get_own_property (ecma_object_t *obj_p, /**< the object */
+ecma_op_general_object_get_own_property (const ecma_object_ptr_t& obj_p, /**< the object */
                                          ecma_string_t *property_name_p) /**< property name */
 {
-  JERRY_ASSERT(obj_p != NULL
+  JERRY_ASSERT(obj_p.is_not_null ()
                && !ecma_is_lexical_environment (obj_p));
   JERRY_ASSERT(property_name_p != NULL);
 
@@ -200,10 +202,10 @@ ecma_op_general_object_get_own_property (ecma_object_t *obj_p, /**< the object *
  *         NULL (i.e. ecma-undefined) - otherwise.
  */
 ecma_property_t*
-ecma_op_general_object_get_property (ecma_object_t *obj_p, /**< the object */
+ecma_op_general_object_get_property (const ecma_object_ptr_t& obj_p, /**< the object */
                                      ecma_string_t *property_name_p) /**< property name */
 {
-  JERRY_ASSERT(obj_p != NULL
+  JERRY_ASSERT(obj_p.is_not_null ()
                && !ecma_is_lexical_environment (obj_p));
   JERRY_ASSERT(property_name_p != NULL);
 
@@ -217,10 +219,11 @@ ecma_op_general_object_get_property (ecma_object_t *obj_p, /**< the object */
   }
 
   // 3.
-  ecma_object_t *prototype_p = ecma_get_object_prototype (obj_p);
+  ecma_object_ptr_t prototype_p;
+  ecma_get_object_prototype (prototype_p, obj_p);
 
   // 4., 5.
-  if (prototype_p != NULL)
+  if (prototype_p.is_not_null ())
   {
     return ecma_op_object_get_property (prototype_p, property_name_p);
   }
@@ -242,12 +245,12 @@ ecma_op_general_object_get_property (ecma_object_t *obj_p, /**< the object */
  */
 void
 ecma_op_general_object_put (ecma_completion_value_t &ret_value, /**< out: completion value */
-                            ecma_object_t *obj_p, /**< the object */
+                            const ecma_object_ptr_t& obj_p, /**< the object */
                             ecma_string_t *property_name_p, /**< property name */
                             const ecma_value_t& value, /**< ecma-value */
                             bool is_throw) /**< flag that controls failure handling */
 {
-  JERRY_ASSERT(obj_p != NULL
+  JERRY_ASSERT(obj_p.is_not_null ()
                && !ecma_is_lexical_environment (obj_p));
   JERRY_ASSERT(property_name_p != NULL);
 
@@ -257,7 +260,9 @@ ecma_op_general_object_put (ecma_completion_value_t &ret_value, /**< out: comple
     if (is_throw)
     {
       // a.
-      ecma_make_throw_obj_completion_value (ret_value, ecma_new_standard_error (ECMA_ERROR_TYPE));
+      ecma_object_ptr_t exception_obj_p;
+      ecma_new_standard_error (exception_obj_p, ECMA_ERROR_TYPE);
+      ecma_make_throw_obj_completion_value (ret_value, exception_obj_p);
       return;
     }
     else
@@ -299,9 +304,9 @@ ecma_op_general_object_put (ecma_completion_value_t &ret_value, /**< out: comple
       && desc_p->type == ECMA_PROPERTY_NAMEDACCESSOR)
   {
     // a.
-    ecma_object_t *setter_p = ECMA_GET_NON_NULL_POINTER (ecma_object_t,
-                                                         desc_p->u.named_accessor_property.set_p);
-    JERRY_ASSERT(setter_p != NULL);
+    ecma_object_ptr_t setter_p;
+    setter_p.unpack_from (desc_p->u.named_accessor_property.set_p);
+    JERRY_ASSERT(setter_p.is_not_null ());
 
     ECMA_TRY_CATCH (ret_value, ecma_op_function_call, call_ret, setter_p, ecma_value_t (obj_p), &value, 1);
 
@@ -349,10 +354,10 @@ ecma_op_general_object_put (ecma_completion_value_t &ret_value, /**< out: comple
  *         false - otherwise.
  */
 bool
-ecma_op_general_object_can_put (ecma_object_t *obj_p, /**< the object */
+ecma_op_general_object_can_put (const ecma_object_ptr_t& obj_p, /**< the object */
                                 ecma_string_t *property_name_p) /**< property name */
 {
-  JERRY_ASSERT(obj_p != NULL
+  JERRY_ASSERT(obj_p.is_not_null ()
                && !ecma_is_lexical_environment (obj_p));
   JERRY_ASSERT(property_name_p != NULL);
 
@@ -388,10 +393,11 @@ ecma_op_general_object_can_put (ecma_object_t *obj_p, /**< the object */
   }
 
   // 3.
-  ecma_object_t *proto_p = ecma_get_object_prototype (obj_p);
+  ecma_object_ptr_t proto_p;
+  ecma_get_object_prototype (proto_p, obj_p);
 
   // 4.
-  if (proto_p == NULL)
+  if (proto_p.is_null ())
   {
     return ecma_get_object_extensible (obj_p);
   }
@@ -408,11 +414,11 @@ ecma_op_general_object_can_put (ecma_object_t *obj_p, /**< the object */
   // 7.
   if (inherited_p->type == ECMA_PROPERTY_NAMEDACCESSOR)
   {
-    ecma_object_t *setter_p = ECMA_GET_POINTER (ecma_object_t,
-                                                inherited_p->u.named_accessor_property.set_p);
+    ecma_object_ptr_t setter_p;
+    setter_p.unpack_from (inherited_p->u.named_accessor_property.set_p, true);
 
     // a.
-    if (setter_p == NULL)
+    if (setter_p.is_null ())
     {
       return false;
     }
@@ -452,11 +458,11 @@ ecma_op_general_object_can_put (ecma_object_t *obj_p, /**< the object */
  */
 void
 ecma_op_general_object_delete (ecma_completion_value_t &ret_value, /**< out: completion value */
-                               ecma_object_t *obj_p, /**< the object */
+                               const ecma_object_ptr_t& obj_p, /**< the object */
                                ecma_string_t *property_name_p, /**< property name */
                                bool is_throw) /**< flag that controls failure handling */
 {
-  JERRY_ASSERT(obj_p != NULL
+  JERRY_ASSERT(obj_p.is_not_null ()
                && !ecma_is_lexical_environment (obj_p));
   JERRY_ASSERT(property_name_p != NULL);
 
@@ -482,7 +488,9 @@ ecma_op_general_object_delete (ecma_completion_value_t &ret_value, /**< out: com
   else if (is_throw)
   {
     // 4.
-    ecma_make_throw_obj_completion_value (ret_value, ecma_new_standard_error (ECMA_ERROR_TYPE));
+    ecma_object_ptr_t exception_obj_p;
+    ecma_new_standard_error (exception_obj_p, ECMA_ERROR_TYPE);
+    ecma_make_throw_obj_completion_value (ret_value, exception_obj_p);
   }
   else
   {
@@ -503,10 +511,10 @@ ecma_op_general_object_delete (ecma_completion_value_t &ret_value, /**< out: com
  */
 void
 ecma_op_general_object_default_value (ecma_completion_value_t &ret_value, /**< out: completion value */
-                                      ecma_object_t *obj_p, /**< the object */
+                                      const ecma_object_ptr_t& obj_p, /**< the object */
                                       ecma_preferred_type_hint_t hint) /**< hint on preferred result type */
 {
-  JERRY_ASSERT(obj_p != NULL
+  JERRY_ASSERT(obj_p.is_not_null ()
                && !ecma_is_lexical_environment (obj_p));
 
   if (hint == ECMA_PREFERRED_TYPE_NO)
@@ -559,7 +567,8 @@ ecma_op_general_object_default_value (ecma_completion_value_t &ret_value, /**< o
 
     if (ecma_op_is_callable (function_value_get))
     {
-      ecma_object_t *func_obj_p = ecma_get_object_from_value (function_value_get);
+      ecma_object_ptr_t func_obj_p;
+      ecma_get_object_from_value (func_obj_p, function_value_get);
 
       ecma_op_function_call (call_completion,
                              func_obj_p,
@@ -590,7 +599,9 @@ ecma_op_general_object_default_value (ecma_completion_value_t &ret_value, /**< o
     ecma_free_completion_value (call_completion);
   }
 
-  ecma_make_throw_obj_completion_value (ret_value, ecma_new_standard_error (ECMA_ERROR_TYPE));
+  ecma_object_ptr_t exception_obj_p;
+  ecma_new_standard_error (exception_obj_p, ECMA_ERROR_TYPE);
+  ecma_make_throw_obj_completion_value (ret_value, exception_obj_p);
 } /* ecma_op_general_object_default_value */
 
 /**
@@ -605,13 +616,13 @@ ecma_op_general_object_default_value (ecma_completion_value_t &ret_value, /**< o
  */
 void
 ecma_op_general_object_define_own_property (ecma_completion_value_t &ret_value, /**< out: completion value */
-                                            ecma_object_t *obj_p, /**< the object */
+                                            const ecma_object_ptr_t& obj_p, /**< the object */
                                             ecma_string_t *property_name_p, /**< property name */
                                             const ecma_property_descriptor_t* property_desc_p, /**< property
                                                                                                 *   descriptor */
                                             bool is_throw) /**< flag that controls failure handling */
 {
-  JERRY_ASSERT(obj_p != NULL
+  JERRY_ASSERT(obj_p.is_not_null ()
                && !ecma_is_lexical_environment (obj_p));
   JERRY_ASSERT(property_name_p != NULL);
 
@@ -658,10 +669,15 @@ ecma_op_general_object_define_own_property (ecma_completion_value_t &ret_value,
       // b.
       JERRY_ASSERT(is_property_desc_accessor_descriptor);
 
+      ecma_object_ptr_t get_p, set_p;
+
+      get_p = property_desc_p->get_p;
+      set_p = property_desc_p->set_p;
+
       ecma_create_named_accessor_property (obj_p,
                                            property_name_p,
-                                           property_desc_p->get_p,
-                                           property_desc_p->set_p,
+                                           get_p,
+                                           set_p,
                                            property_desc_p->is_enumerable,
                                            property_desc_p->is_configurable);
 
@@ -784,11 +800,12 @@ ecma_op_general_object_define_own_property (ecma_completion_value_t &ret_value,
     if (is_current_data_descriptor)
     {
       // b.
+      ecma_object_ptr_t null_pointer;
 
       current_p = ecma_create_named_accessor_property (obj_p,
                                                        property_name_p,
-                                                       NULL,
-                                                       NULL,
+                                                       null_pointer,
+                                                       null_pointer,
                                                        ecma_is_property_enumerable (current_p),
                                                        ecma_is_property_configurable (current_p));
     }
@@ -875,9 +892,13 @@ ecma_op_general_object_define_own_property (ecma_completion_value_t &ret_value,
   {
     JERRY_ASSERT(is_current_accessor_descriptor);
 
-    ecma_object_t *get_p = property_desc_p->get_p;
+    ecma_object_ptr_t get_p;
+    get_p = property_desc_p->get_p;
 
-    ECMA_SET_POINTER(current_p->u.named_accessor_property.get_p, get_p);
+    {
+      ecma_object_t *get_tmp_p = (ecma_object_t*) get_p;
+      ECMA_SET_POINTER(current_p->u.named_accessor_property.get_p, get_tmp_p);
+    }
     ecma_gc_update_may_ref_younger_object_flag_by_object (obj_p, get_p);
   }
 
@@ -885,9 +906,13 @@ ecma_op_general_object_define_own_property (ecma_completion_value_t &ret_value,
   {
     JERRY_ASSERT(is_current_accessor_descriptor);
 
-    ecma_object_t *set_p = property_desc_p->set_p;
+    ecma_object_ptr_t set_p;
+    set_p = property_desc_p->set_p;
 
-    ECMA_SET_POINTER(current_p->u.named_accessor_property.set_p, set_p);
+    {
+      ecma_object_t *set_tmp_p = (ecma_object_t*) set_p;
+      ECMA_SET_POINTER(current_p->u.named_accessor_property.set_p, set_tmp_p);
+    }
     ecma_gc_update_may_ref_younger_object_flag_by_object (obj_p, set_p);
   }
 
diff --git a/src/libecmaoperations/ecma-objects-general.h b/src/libecmaoperations/ecma-objects-general.h
index efa8df261..efd0edf87 100644
--- a/src/libecmaoperations/ecma-objects-general.h
+++ b/src/libecmaoperations/ecma-objects-general.h
@@ -27,43 +27,43 @@
  * @{
  */
 
-extern ecma_object_t*
-ecma_op_create_object_object_noarg (void);
+extern void
+ecma_op_create_object_object_noarg (ecma_object_ptr_t &ret_val);
 extern void
 ecma_op_create_object_object_arg (ecma_completion_value_t &ret_value,
                                   const ecma_value_t& value);
 
 extern void
 ecma_op_general_object_get (ecma_completion_value_t &ret_value,
-                            ecma_object_t *obj_p,
+                            const ecma_object_ptr_t& obj_p,
                             ecma_string_t *property_name_p);
 extern ecma_property_t*
-ecma_op_general_object_get_own_property (ecma_object_t *obj_p,
+ecma_op_general_object_get_own_property (const ecma_object_ptr_t& obj_p,
                                          ecma_string_t *property_name_p);
 extern ecma_property_t*
-ecma_op_general_object_get_property (ecma_object_t *obj_p,
+ecma_op_general_object_get_property (const ecma_object_ptr_t& obj_p,
                                      ecma_string_t *property_name_p);
 extern void
 ecma_op_general_object_put (ecma_completion_value_t &ret_value,
-                            ecma_object_t *obj_p,
+                            const ecma_object_ptr_t& obj_p,
                             ecma_string_t *property_name_p,
                             const ecma_value_t& value,
                             bool is_throw);
 extern bool
-ecma_op_general_object_can_put (ecma_object_t *obj_p,
+ecma_op_general_object_can_put (const ecma_object_ptr_t& obj_p,
                                 ecma_string_t *property_name_p);
 extern void
 ecma_op_general_object_delete (ecma_completion_value_t &ret_value,
-                               ecma_object_t *obj_p,
+                               const ecma_object_ptr_t& obj_p,
                                ecma_string_t *property_name_p,
                                bool is_throw);
 extern void
 ecma_op_general_object_default_value (ecma_completion_value_t &ret_value,
-                                      ecma_object_t *obj_p,
+                                      const ecma_object_ptr_t& obj_p,
                                       ecma_preferred_type_hint_t hint);
 extern void
 ecma_op_general_object_define_own_property (ecma_completion_value_t &ret_value,
-                                            ecma_object_t *obj_p,
+                                            const ecma_object_ptr_t& obj_p,
                                             ecma_string_t *property_name_p,
                                             const ecma_property_descriptor_t* property_desc_p,
                                             bool is_throw);
diff --git a/src/libecmaoperations/ecma-objects.c b/src/libecmaoperations/ecma-objects.c
index cc90820be..0ccf8c0e2 100644
--- a/src/libecmaoperations/ecma-objects.c
+++ b/src/libecmaoperations/ecma-objects.c
@@ -42,10 +42,10 @@
  */
 void
 ecma_op_object_get (ecma_completion_value_t &ret_value, /**< out: completion value */
-                    ecma_object_t *obj_p, /**< the object */
+                    const ecma_object_ptr_t& obj_p, /**< the object */
                     ecma_string_t *property_name_p) /**< property name */
 {
-  JERRY_ASSERT(obj_p != NULL
+  JERRY_ASSERT(obj_p.is_not_null ()
                && !ecma_is_lexical_environment (obj_p));
   JERRY_ASSERT(property_name_p != NULL);
 
@@ -87,7 +87,7 @@ ecma_op_object_get (ecma_completion_value_t &ret_value, /**< out: completion val
  *         NULL (i.e. ecma-undefined) - otherwise.
  */
 static __noinline ecma_property_t*
-ecma_op_object_get_own_property_longpath (ecma_object_t *obj_p, /**< the object */
+ecma_op_object_get_own_property_longpath (const ecma_object_ptr_t& obj_p, /**< the object */
                                           ecma_string_t *property_name_p) /**< property name */
 {
   const ecma_object_type_t type = ecma_get_object_type (obj_p);
@@ -154,10 +154,10 @@ ecma_op_object_get_own_property_longpath (ecma_object_t *obj_p, /**< the object
  *         NULL (i.e. ecma-undefined) - otherwise.
  */
 ecma_property_t*
-ecma_op_object_get_own_property (ecma_object_t *obj_p, /**< the object */
+ecma_op_object_get_own_property (const ecma_object_ptr_t& obj_p, /**< the object */
                                  ecma_string_t *property_name_p) /**< property name */
 {
-  JERRY_ASSERT(obj_p != NULL
+  JERRY_ASSERT(obj_p.is_not_null ()
                && !ecma_is_lexical_environment (obj_p));
   JERRY_ASSERT(property_name_p != NULL);
 
@@ -183,10 +183,10 @@ ecma_op_object_get_own_property (ecma_object_t *obj_p, /**< the object */
  *         NULL (i.e. ecma-undefined) - otherwise.
  */
 ecma_property_t*
-ecma_op_object_get_property (ecma_object_t *obj_p, /**< the object */
+ecma_op_object_get_property (const ecma_object_ptr_t& obj_p, /**< the object */
                              ecma_string_t *property_name_p) /**< property name */
 {
-  JERRY_ASSERT(obj_p != NULL
+  JERRY_ASSERT(obj_p.is_not_null ()
                && !ecma_is_lexical_environment (obj_p));
   JERRY_ASSERT(property_name_p != NULL);
 
@@ -194,7 +194,7 @@ ecma_op_object_get_property (ecma_object_t *obj_p, /**< the object */
   JERRY_ASSERT (type < ECMA_OBJECT_TYPE__COUNT);
 
   /*
-   * typedef ecma_property_t* (*get_property_ptr_t) (ecma_object_t *, ecma_string_t *);
+   * typedef ecma_property_t* (*get_property_ptr_t) (const ecma_object_ptr_t& , ecma_string_t *);
    * static const get_property_ptr_t get_property [ECMA_OBJECT_TYPE__COUNT] =
    * {
    *   [ECMA_OBJECT_TYPE_GENERAL]           = &ecma_op_general_object_get_property,
@@ -223,12 +223,12 @@ ecma_op_object_get_property (ecma_object_t *obj_p, /**< the object */
  */
 void
 ecma_op_object_put (ecma_completion_value_t &ret_value, /**< out: completion value */
-                    ecma_object_t *obj_p, /**< the object */
+                    const ecma_object_ptr_t& obj_p, /**< the object */
                     ecma_string_t *property_name_p, /**< property name */
                     const ecma_value_t& value, /**< ecma-value */
                     bool is_throw) /**< flag that controls failure handling */
 {
-  JERRY_ASSERT(obj_p != NULL
+  JERRY_ASSERT(obj_p.is_not_null ()
                && !ecma_is_lexical_environment (obj_p));
   JERRY_ASSERT(property_name_p != NULL);
 
@@ -236,7 +236,7 @@ ecma_op_object_put (ecma_completion_value_t &ret_value, /**< out: completion val
   JERRY_ASSERT (type < ECMA_OBJECT_TYPE__COUNT);
 
   /*
-   * typedef ecma_property_t* (*put_ptr_t) (ecma_object_t *, ecma_string_t *);
+   * typedef ecma_property_t* (*put_ptr_t) (const ecma_object_ptr_t& , ecma_string_t *);
    * static const put_ptr_t put [ECMA_OBJECT_TYPE__COUNT] =
    * {
    *   [ECMA_OBJECT_TYPE_GENERAL]           = &ecma_op_general_object_put,
@@ -264,10 +264,10 @@ ecma_op_object_put (ecma_completion_value_t &ret_value, /**< out: completion val
  *         false - otherwise.
  */
 bool
-ecma_op_object_can_put (ecma_object_t *obj_p, /**< the object */
+ecma_op_object_can_put (const ecma_object_ptr_t& obj_p, /**< the object */
                         ecma_string_t *property_name_p) /**< property name */
 {
-  JERRY_ASSERT(obj_p != NULL
+  JERRY_ASSERT(obj_p.is_not_null ()
                && !ecma_is_lexical_environment (obj_p));
   JERRY_ASSERT(property_name_p != NULL);
 
@@ -275,7 +275,7 @@ ecma_op_object_can_put (ecma_object_t *obj_p, /**< the object */
   JERRY_ASSERT (type < ECMA_OBJECT_TYPE__COUNT);
 
   /*
-   * typedef ecma_property_t* (*can_put_ptr_t) (ecma_object_t *, ecma_string_t *);
+   * typedef ecma_property_t* (*can_put_ptr_t) (const ecma_object_ptr_t& , ecma_string_t *);
    * static const can_put_ptr_t can_put [ECMA_OBJECT_TYPE__COUNT] =
    * {
    *   [ECMA_OBJECT_TYPE_GENERAL]           = &ecma_op_general_object_can_put,
@@ -304,11 +304,11 @@ ecma_op_object_can_put (ecma_object_t *obj_p, /**< the object */
  */
 void
 ecma_op_object_delete (ecma_completion_value_t &ret_value, /**< out: completion value */
-                       ecma_object_t *obj_p, /**< the object */
+                       const ecma_object_ptr_t& obj_p, /**< the object */
                        ecma_string_t *property_name_p, /**< property name */
                        bool is_throw) /**< flag that controls failure handling */
 {
-  JERRY_ASSERT(obj_p != NULL
+  JERRY_ASSERT(obj_p.is_not_null ()
                && !ecma_is_lexical_environment (obj_p));
   JERRY_ASSERT(property_name_p != NULL);
 
@@ -360,17 +360,17 @@ ecma_op_object_delete (ecma_completion_value_t &ret_value, /**< out: completion
  */
 void
 ecma_op_object_default_value (ecma_completion_value_t &ret_value, /**< out: completion value */
-                              ecma_object_t *obj_p, /**< the object */
+                              const ecma_object_ptr_t& obj_p, /**< the object */
                               ecma_preferred_type_hint_t hint) /**< hint on preferred result type */
 {
-  JERRY_ASSERT(obj_p != NULL
+  JERRY_ASSERT(obj_p.is_not_null ()
                && !ecma_is_lexical_environment (obj_p));
 
   const ecma_object_type_t type = ecma_get_object_type (obj_p);
   JERRY_ASSERT (type < ECMA_OBJECT_TYPE__COUNT);
 
   /*
-   * typedef ecma_property_t* (*default_value_ptr_t) (ecma_object_t *, ecma_string_t *);
+   * typedef ecma_property_t* (*default_value_ptr_t) (const ecma_object_ptr_t& , ecma_string_t *);
    * static const default_value_ptr_t default_value [ECMA_OBJECT_TYPE__COUNT] =
    * {
    *   [ECMA_OBJECT_TYPE_GENERAL]           = &ecma_op_general_object_default_value,
@@ -399,13 +399,13 @@ ecma_op_object_default_value (ecma_completion_value_t &ret_value, /**< out: comp
  */
 void
 ecma_op_object_define_own_property (ecma_completion_value_t &ret_value, /**< out: completion value */
-                                    ecma_object_t *obj_p, /**< the object */
+                                    const ecma_object_ptr_t& obj_p, /**< the object */
                                     ecma_string_t *property_name_p, /**< property name */
                                     const ecma_property_descriptor_t* property_desc_p, /**< property
                                                                                         *   descriptor */
                                     bool is_throw) /**< flag that controls failure handling */
 {
-  JERRY_ASSERT(obj_p != NULL
+  JERRY_ASSERT(obj_p.is_not_null ()
                && !ecma_is_lexical_environment (obj_p));
   JERRY_ASSERT(property_name_p != NULL);
 
@@ -465,10 +465,10 @@ ecma_op_object_define_own_property (ecma_completion_value_t &ret_value, /**< out
  */
 void
 ecma_op_object_has_instance (ecma_completion_value_t &ret_value, /**< out: completion value */
-                             ecma_object_t *obj_p, /**< the object */
+                             const ecma_object_ptr_t& obj_p, /**< the object */
                              const ecma_value_t& value) /**< argument 'V' */
 {
-  JERRY_ASSERT(obj_p != NULL
+  JERRY_ASSERT(obj_p.is_not_null ()
                && !ecma_is_lexical_environment (obj_p));
 
   const ecma_object_type_t type = ecma_get_object_type (obj_p);
@@ -480,7 +480,9 @@ ecma_op_object_has_instance (ecma_completion_value_t &ret_value, /**< out: compl
     case ECMA_OBJECT_TYPE_STRING:
     case ECMA_OBJECT_TYPE_ARGUMENTS:
     {
-      ecma_make_throw_obj_completion_value (ret_value, ecma_new_standard_error (ECMA_ERROR_TYPE));
+      ecma_object_ptr_t exception_obj_p;
+      ecma_new_standard_error (exception_obj_p, ECMA_ERROR_TYPE);
+      ecma_make_throw_obj_completion_value (ret_value, exception_obj_p);
       return;
     }
 
diff --git a/src/libecmaoperations/ecma-objects.h b/src/libecmaoperations/ecma-objects.h
index 63aa000e7..f53a65d61 100644
--- a/src/libecmaoperations/ecma-objects.h
+++ b/src/libecmaoperations/ecma-objects.h
@@ -29,41 +29,41 @@
 
 extern void
 ecma_op_object_get (ecma_completion_value_t &ret_value,
-                    ecma_object_t *obj_p,
+                    const ecma_object_ptr_t& obj_p,
                     ecma_string_t *property_name_p);
 extern ecma_property_t*
-ecma_op_object_get_own_property (ecma_object_t *obj_p,
+ecma_op_object_get_own_property (const ecma_object_ptr_t& obj_p,
                                  ecma_string_t *property_name_p);
 extern ecma_property_t*
-ecma_op_object_get_property (ecma_object_t *obj_p,
+ecma_op_object_get_property (const ecma_object_ptr_t& obj_p,
                              ecma_string_t *property_name_p);
 extern void
 ecma_op_object_put (ecma_completion_value_t &ret_value,
-                    ecma_object_t *obj_p,
+                    const ecma_object_ptr_t& obj_p,
                     ecma_string_t *property_name_p,
                     const ecma_value_t& value,
                     bool is_throw);
 extern bool
-ecma_op_object_can_put (ecma_object_t *obj_p,
+ecma_op_object_can_put (const ecma_object_ptr_t& obj_p,
                         ecma_string_t *property_name_p);
 extern void
 ecma_op_object_delete (ecma_completion_value_t &ret_value,
-                       ecma_object_t *obj_p,
+                       const ecma_object_ptr_t& obj_p,
                        ecma_string_t *property_name_p,
                        bool is_throw);
 extern void
 ecma_op_object_default_value (ecma_completion_value_t &ret_value,
-                              ecma_object_t *obj_p,
+                              const ecma_object_ptr_t& obj_p,
                               ecma_preferred_type_hint_t hint);
 extern void
 ecma_op_object_define_own_property (ecma_completion_value_t &ret_value,
-                                    ecma_object_t *obj_p,
+                                    const ecma_object_ptr_t& obj_p,
                                     ecma_string_t *property_name_p,
                                     const ecma_property_descriptor_t* property_desc_p,
                                     bool is_throw);
 extern void
 ecma_op_object_has_instance (ecma_completion_value_t &ret_value,
-                             ecma_object_t *obj_p,
+                             const ecma_object_ptr_t& obj_p,
                              const ecma_value_t& value);
 /**
  * @}
diff --git a/src/libecmaoperations/ecma-reference.c b/src/libecmaoperations/ecma-reference.c
index 926801789..756e8f351 100644
--- a/src/libecmaoperations/ecma-reference.c
+++ b/src/libecmaoperations/ecma-reference.c
@@ -36,25 +36,24 @@
  *          pointer to lexical environment - reference's base,
  *         else - NULL.
  */
-ecma_object_t*
-ecma_op_resolve_reference_base (ecma_object_t *lex_env_p, /**< starting lexical environment */
+void
+ecma_op_resolve_reference_base (ecma_object_ptr_t &lex_env_iter_p, /**< out: object pointer */
+                                const ecma_object_ptr_t &lex_env_p, /**< starting lexical environment */
                                 ecma_string_t *name_p) /**< identifier's name */
 {
-  JERRY_ASSERT(lex_env_p != NULL);
+  JERRY_ASSERT(lex_env_p.is_not_null ());
 
-  ecma_object_t *lex_env_iter_p = lex_env_p;
+  lex_env_iter_p = lex_env_p;
 
-  while (lex_env_iter_p != NULL)
+  while (lex_env_iter_p.is_not_null ())
   {
     if (ecma_op_has_binding (lex_env_iter_p, name_p))
     {
-      return lex_env_iter_p;
+      return;
     }
 
-    lex_env_iter_p = ecma_get_lex_env_outer_reference (lex_env_iter_p);
+    ecma_get_lex_env_outer_reference (lex_env_iter_p, lex_env_iter_p);
   }
-
-  return NULL;
 } /* ecma_op_resolve_reference_base */
 
 /**
@@ -65,15 +64,16 @@ ecma_op_resolve_reference_base (ecma_object_t *lex_env_p, /**< starting lexical
  */
 void
 ecma_op_get_identifier_reference (ecma_reference_t &ret, /**< out: reference */
-                                  ecma_object_t *lex_env_p, /**< lexical environment */
+                                  const ecma_object_ptr_t& lex_env_p, /**< lexical environment */
                                   ecma_string_t *name_p, /**< identifier's name */
                                   bool is_strict) /**< strict reference flag */
 {
-  JERRY_ASSERT(lex_env_p != NULL);
+  JERRY_ASSERT(lex_env_p.is_not_null ());
 
-  ecma_object_t *base_lex_env_p = ecma_op_resolve_reference_base (lex_env_p, name_p);
+  ecma_object_ptr_t base_lex_env_p;
+  ecma_op_resolve_reference_base (base_lex_env_p, lex_env_p, name_p);
 
-  if (base_lex_env_p != NULL)
+  if (base_lex_env_p.is_not_null ())
   {
     ecma_make_reference (ret,
                          ecma_value_t (base_lex_env_p),
diff --git a/src/libecmaoperations/ecma-reference.h b/src/libecmaoperations/ecma-reference.h
index 7daa90c3e..4e42971e2 100644
--- a/src/libecmaoperations/ecma-reference.h
+++ b/src/libecmaoperations/ecma-reference.h
@@ -48,11 +48,13 @@ typedef struct ecma_reference_t
   unsigned int is_strict : 1;
 } ecma_reference_t;
 
-extern ecma_object_t* ecma_op_resolve_reference_base (ecma_object_t *lex_env_p,
-                                                      ecma_string_t *name_p);
+extern void
+ecma_op_resolve_reference_base (ecma_object_ptr_t &ret_val,
+                                const ecma_object_ptr_t& lex_env_p,
+                                ecma_string_t *name_p);
 
 extern void ecma_op_get_identifier_reference (ecma_reference_t &ret,
-                                              ecma_object_t *lex_env_p,
+                                              const ecma_object_ptr_t& lex_env_p,
                                               ecma_string_t *name_p,
                                               bool is_strict);
 extern void ecma_make_reference (ecma_reference_t &ret,
diff --git a/src/libecmaoperations/ecma-string-object.c b/src/libecmaoperations/ecma-string-object.c
index 3e9777fbf..c20d65fa4 100644
--- a/src/libecmaoperations/ecma-string-object.c
+++ b/src/libecmaoperations/ecma-string-object.c
@@ -84,14 +84,15 @@ ecma_op_create_string_object (ecma_completion_value_t &ret_value, /**< out: comp
   }
 
 #ifndef CONFIG_ECMA_COMPACT_PROFILE_DISABLE_STRING_BUILTIN
-  ecma_object_t *prototype_obj_p = ecma_builtin_get (ECMA_BUILTIN_ID_STRING_PROTOTYPE);
+  ecma_object_ptr_t prototype_obj_p;
+  ecma_builtin_get (prototype_obj_p, ECMA_BUILTIN_ID_STRING_PROTOTYPE);
 #else /* !CONFIG_ECMA_COMPACT_PROFILE_DISABLE_STRING_BUILTIN */
-  ecma_object_t *prototype_obj_p = ecma_builtin_get (ECMA_BUILTIN_ID_OBJECT_PROTOTYPE);
+  ecma_object_ptr_t prototype_obj_p;
+  ecma_builtin_get (prototype_obj_p, ECMA_BUILTIN_ID_OBJECT_PROTOTYPE);
 #endif /* CONFIG_ECMA_COMPACT_PROFILE_DISABLE_STRING_BUILTIN */
 
-  ecma_object_t *obj_p = ecma_create_object (prototype_obj_p,
-                                             true,
-                                             ECMA_OBJECT_TYPE_STRING);
+  ecma_object_ptr_t obj_p;
+  ecma_create_object (obj_p, prototype_obj_p, true, ECMA_OBJECT_TYPE_STRING);
   ecma_deref_object (prototype_obj_p);
 
   ecma_property_t *class_prop_p = ecma_create_internal_property (obj_p, ECMA_INTERNAL_PROPERTY_CLASS);
@@ -125,7 +126,7 @@ ecma_op_create_string_object (ecma_completion_value_t &ret_value, /**< out: comp
  *         Returned value must be freed with ecma_free_completion_value
  */
 ecma_property_t*
-ecma_op_string_object_get_own_property (ecma_object_t *obj_p, /**< the array object */
+ecma_op_string_object_get_own_property (const ecma_object_ptr_t& obj_p, /**< the array object */
                                         ecma_string_t *property_name_p) /**< property name */
 {
   JERRY_ASSERT (ecma_get_object_type (obj_p) == ECMA_OBJECT_TYPE_STRING);
diff --git a/src/libecmaoperations/ecma-string-object.h b/src/libecmaoperations/ecma-string-object.h
index 3f0d01469..ae8e718d4 100644
--- a/src/libecmaoperations/ecma-string-object.h
+++ b/src/libecmaoperations/ecma-string-object.h
@@ -32,7 +32,7 @@ ecma_op_create_string_object (ecma_completion_value_t &ret_value,
                               ecma_length_t arguments_list_len);
 
 extern ecma_property_t*
-ecma_op_string_object_get_own_property (ecma_object_t *obj_p,
+ecma_op_string_object_get_own_property (const ecma_object_ptr_t& obj_p,
                                         ecma_string_t *property_name_p);
 
 /**