diff --git a/jerry-core/ecma/builtin-objects/ecma-builtin-array-prototype.c b/jerry-core/ecma/builtin-objects/ecma-builtin-array-prototype.c
index 4ab1c4962..1af3cb64d 100644
--- a/jerry-core/ecma/builtin-objects/ecma-builtin-array-prototype.c
+++ b/jerry-core/ecma/builtin-objects/ecma-builtin-array-prototype.c
@@ -1526,7 +1526,8 @@ ecma_builtin_array_prototype_object_splice (const ecma_value_t args[], /**< argu
* The Array.prototype object's 'unshift' routine
*
* See also:
- * ECMA-262 v5, 15.4.4.13
+ * ECMA-262 v5, 15.4.4.13
+ * ECMA-262 v11, 22.1.3.31
*
* @return ecma value
* Returned value must be freed with ecma_free_value.
@@ -1574,60 +1575,70 @@ ecma_builtin_array_prototype_object_unshift (const ecma_value_t args[], /**< arg
}
}
- /* 4. */
- if (len + args_number > ECMA_NUMBER_MAX_SAFE_INTEGER)
+#if ENABLED (JERRY_ESNEXT)
+ const bool should_iterate = args_number > 0;
+#else /* !ENABLED (JERRY_ESNEXT) */
+ const bool should_iterate = true;
+#endif /* ENABLED (JERRY_ESNEXT) */
+ if (should_iterate)
{
- return ecma_raise_type_error (ECMA_ERR_MSG ("Unshift elements over 2**53-1 length is disallowed"));
- }
-
- /* 5. and 6. */
- for (ecma_length_t k = len; k > 0; k--)
- {
- /* 6.a, 6.c*/
- ecma_value_t get_value = ecma_op_object_find_by_index (obj_p, k - 1);
-
- if (ECMA_IS_VALUE_ERROR (get_value))
+#if ENABLED (JERRY_ESNEXT)
+ /* ES11:4.a. */
+ if (len + args_number > ECMA_NUMBER_MAX_SAFE_INTEGER)
{
- return get_value;
+ return ecma_raise_type_error (ECMA_ERR_MSG ("Unshift elements over 2**53-1 length is disallowed"));
+ }
+#endif /* ENABLED (JERRY_ESNEXT) */
+
+ /* ES5.1:5.,6. ES11: 4.b, 4.c */
+ for (ecma_length_t k = len; k > 0; k--)
+ {
+ /* ES5.1:6.a, 6.c, ES11:4.c.i., 4.c.iii. */
+ ecma_value_t get_value = ecma_op_object_find_by_index (obj_p, k - 1);
+
+ if (ECMA_IS_VALUE_ERROR (get_value))
+ {
+ return get_value;
+ }
+
+ /* ES5.1:6.b, ES11:4.c.ii. */
+ ecma_number_t new_idx = ((ecma_number_t) k) + ((ecma_number_t) args_number) - 1;
+ ecma_string_t *index_str_p = ecma_new_ecma_string_from_number (new_idx);
+ ecma_value_t operation_value;
+
+ if (ecma_is_value_found (get_value))
+ {
+ /* ES5.1:6.d.i, 6.d.ii, ES11:4.c.iv. */
+ operation_value = ecma_op_object_put (obj_p, index_str_p, get_value, true);
+ ecma_free_value (get_value);
+ }
+ else
+ {
+ /* ES5.1:6.e.i, ES11:4.c.v. */
+ operation_value = ecma_op_object_delete (obj_p, index_str_p, true);
+ }
+
+ ecma_deref_ecma_string (index_str_p);
+
+ if (ECMA_IS_VALUE_ERROR (operation_value))
+ {
+ return operation_value;
+ }
}
- /* 6.b */
- ecma_number_t new_idx = ((ecma_number_t) k) + ((ecma_number_t) args_number) - 1;
- ecma_string_t *index_str_p = ecma_new_ecma_string_from_number (new_idx);
- ecma_value_t operation_value;
-
- if (ecma_is_value_found (get_value))
+ for (uint32_t arg_index = 0; arg_index < args_number; arg_index++)
{
- /* 6.d.i, 6.d.ii */
- operation_value = ecma_op_object_put (obj_p, index_str_p, get_value, true);
- ecma_free_value (get_value);
- }
- else
- {
- /* 6.e.i */
- operation_value = ecma_op_object_delete (obj_p, index_str_p, true);
- }
+ /* ES5.1:9.b, ES11:4.f.ii. */
+ ecma_value_t put_value = ecma_op_object_put_by_index (obj_p, arg_index, args[arg_index], true);
- ecma_deref_ecma_string (index_str_p);
-
- if (ECMA_IS_VALUE_ERROR (operation_value))
- {
- return operation_value;
+ if (ECMA_IS_VALUE_ERROR (put_value))
+ {
+ return put_value;
+ }
}
}
- for (uint32_t arg_index = 0; arg_index < args_number; arg_index++)
- {
- /* 9.b */
- ecma_value_t put_value = ecma_op_object_put_by_index (obj_p, arg_index, args[arg_index], true);
-
- if (ECMA_IS_VALUE_ERROR (put_value))
- {
- return put_value;
- }
- }
-
- /* 10. */
+ /* ES5.1:10., ES11:5. */
ecma_number_t new_len = ((ecma_number_t) len) + ((ecma_number_t) args_number);
ecma_value_t set_length_value = ecma_builtin_array_prototype_helper_set_length (obj_p, new_len);
diff --git a/tests/jerry/es.next/array-prototype-unshift.js b/tests/jerry/es.next/array-prototype-unshift.js
new file mode 100644
index 000000000..bf92602c0
--- /dev/null
+++ b/tests/jerry/es.next/array-prototype-unshift.js
@@ -0,0 +1,17 @@
+// 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.
+
+var arrayLike = {get 5() { throw "shouldn't throw"; }};
+arrayLike.length = 10;
+Array.prototype.unshift.call(arrayLike);
diff --git a/tests/jerry/es5.1/array-prototype-unshift.js b/tests/jerry/es5.1/array-prototype-unshift.js
new file mode 100644
index 000000000..13a8444e7
--- /dev/null
+++ b/tests/jerry/es5.1/array-prototype-unshift.js
@@ -0,0 +1,22 @@
+// 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.
+
+var arrayLike = {get 5() { throw "should throw"; }};
+arrayLike.length = 10;
+try {
+ Array.prototype.unshift.call(arrayLike);
+ assert(false);
+} catch (error) {
+ assert(error == "should throw");
+}
diff --git a/tests/test262-esnext-excludelist.xml b/tests/test262-esnext-excludelist.xml
index a7bd76506..0d8070f15 100644
--- a/tests/test262-esnext-excludelist.xml
+++ b/tests/test262-esnext-excludelist.xml
@@ -170,7 +170,6 @@
-