Fix for null pointer dereference in jmem_heap_free_block (#2440)

Fixes #2435.

JerryScript-DCO-1.0-Signed-off-by: Daniel Balla dballa@inf.u-szeged.hu

jerry-core/ecma/builtin-objects/typedarray/ecma-builtin-typedarray-prototype.c

@@ -553,6 +553,11 @@ ecma_builtin_typedarray_prototype_filter (ecma_value_t this_arg, /**< this argum
   ecma_object_t *func_object_p = ecma_get_object_from_value (cb_func_val);
   ecma_value_t ret_value = ECMA_VALUE_EMPTY;
 
+  if (len == 0)
+  {
+    return ecma_op_create_typedarray_with_type_and_length (obj_p, 0);
+  }
+
   JMEM_DEFINE_LOCAL_ARRAY (pass_value_list_p, len * element_size, lit_utf8_byte_t);
 
   lit_utf8_byte_t *pass_value_p = pass_value_list_p;
@@ -588,7 +593,6 @@ ecma_builtin_typedarray_prototype_filter (ecma_value_t this_arg, /**< this argum
 
     ret_value = ecma_op_create_typedarray_with_type_and_length (obj_p, pass_num);
 
-
     if (!ECMA_IS_VALUE_ERROR (ret_value))
     {
       obj_p = ecma_get_object_from_value (ret_value);

tests/jerry/es2015/regression-test-issue-2435.js

@@ -0,0 +1,15 @@
+// Copyright JS Foundation and other contributors, http://js.foundation
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+(new Int8Array(0)).filter(parseInt)