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Add fast-path check to ecma_builtin_array_prototype_slice (#3480)

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Fixes #3459

JerryScript-DCO-1.0-Signed-off-by: Peter Marki marpeter@inf.u-szeged.hu
This commit is contained in:
Peter Marki
2020-01-06 10:30:10 +01:00
committed by Robert Fancsik
parent dc15944ebd
commit 300570381f
2 changed files with 24 additions and 1 deletions
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jerry-core/ecma/builtin-objects/ecma-builtin-array-prototype.c
+3 -1
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@@ -827,6 +827,7 @@ ecma_builtin_array_prototype_object_slice (ecma_value_t arg1, /**< start */
JERRY_ASSERT (start <= len && end <= len);
bool use_fast_path = ecma_op_object_is_fast_array (obj_p);
#if ENABLED (JERRY_ES2015)
ecma_value_t new_array = ecma_op_array_species_create (obj_p, 0);
@@ -834,6 +835,7 @@ ecma_builtin_array_prototype_object_slice (ecma_value_t arg1, /**< start */
{
return new_array;
}
use_fast_path &= ecma_op_object_is_fast_array (ecma_get_object_from_value (new_array));
#else /* !ENABLED (JERRY_ES2015) */
ecma_value_t new_array = ecma_op_create_array_object (NULL, 0, false);
JERRY_ASSERT (!ECMA_IS_VALUE_ERROR (new_array));
@@ -844,7 +846,7 @@ ecma_builtin_array_prototype_object_slice (ecma_value_t arg1, /**< start */
/* 9. */
uint32_t n = 0;
if (ecma_op_object_is_fast_array (obj_p))
if (use_fast_path)
{
ecma_extended_object_t *ext_from_obj_p = (ecma_extended_object_t *) obj_p;