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Fix attributes of length property for function objects (#3570)

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fix length property of function objects to be configurable (ECMA-262 v6, 19.2.4.1)

JerryScript-DCO-1.0-Signed-off-by: HyukWoo Park hyukwoo.park@samsung.com
This commit is contained in:
Hyukwoo Park
2020-03-12 23:00:53 +09:00
committed by GitHub
parent 6ef0a0e07e
commit 47d85a12e2
5 changed files with 80 additions and 2 deletions
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jerry-core/ecma/operations/ecma-objects.c
+13
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@@ -249,6 +249,7 @@ ecma_op_object_get_own_property (ecma_object_t *object_p, /**< the object */
}
else if (type == ECMA_OBJECT_TYPE_FUNCTION)
{
#if !ENABLED (JERRY_ES2015)
if (ecma_string_is_length (property_name_p))
{
if (options & ECMA_PROPERTY_GET_VALUE)
@@ -274,6 +275,7 @@ ecma_op_object_get_own_property (ecma_object_t *object_p, /**< the object */
return ECMA_PROPERTY_TYPE_VIRTUAL;
}
#endif /* !ENABLED (JERRY_ES2015) */
/* Get prototype physical property. */
property_p = ecma_op_function_try_to_lazy_instantiate_property (object_p, property_name_p);
@@ -594,6 +596,7 @@ ecma_op_object_find_own (ecma_value_t base_value, /**< base value */
}
else if (type == ECMA_OBJECT_TYPE_FUNCTION)
{
#if !ENABLED (JERRY_ES2015)
if (ecma_string_is_length (property_name_p))
{
/* Get length virtual property. */
@@ -614,6 +617,7 @@ ecma_op_object_find_own (ecma_value_t base_value, /**< base value */
return ecma_make_uint32_value (len);
}
#endif /* !ENABLED (JERRY_ES2015) */
/* Get prototype physical property. */
property_p = ecma_op_function_try_to_lazy_instantiate_property (object_p, property_name_p);
@@ -1322,10 +1326,19 @@ ecma_op_object_put_with_receiver (ecma_object_t *object_p, /**< the object */
}
else if (type == ECMA_OBJECT_TYPE_FUNCTION)
{
#if ENABLED (JERRY_ES2015)
/* Uninitialized 'length' property is non-writable (ECMA-262 v6, 19.2.4.1) */
if ((ecma_string_is_length (property_name_p))
&& (!ECMA_GET_FIRST_BIT_FROM_POINTER_TAG (((ecma_extended_object_t *) object_p)->u.function.scope_cp)))
{
return ecma_reject (is_throw);
}
#else /* !ENABLED (JERRY_ES2015) */
if (ecma_string_is_length (property_name_p))
{
return ecma_reject (is_throw);
}
#endif /* ENABLED (JERRY_ES2015) */
/* Get prototype physical property. */
property_p = ecma_op_function_try_to_lazy_instantiate_property (object_p, property_name_p);