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Arrow functions prototype property should not be lazy instantiated (#3251)

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This patch fixes #3250

JerryScript-DCO-1.0-Signed-off-by: Robert Fancsik frobert@inf.u-szeged.hu
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Robert Fancsik 2019-10-28 10:33:28 +01:00 committed by GitHub
parent 3d797b8836
commit 351b88184c
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 18 additions and 1 deletions
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3
jerry-core/ecma/operations/ecma-function-object.c
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@ -1260,7 +1260,8 @@ ecma_op_function_try_to_lazy_instantiate_property (ecma_object_t *object_p, /**<
{
JERRY_ASSERT (!ecma_get_object_is_builtin (object_p));
if (ecma_compare_ecma_string_to_magic_id (property_name_p, LIT_MAGIC_STRING_PROTOTYPE))
if (ecma_compare_ecma_string_to_magic_id (property_name_p, LIT_MAGIC_STRING_PROTOTYPE)
&& ecma_get_object_type (object_p) == ECMA_OBJECT_TYPE_FUNCTION)
{
return ecma_op_lazy_instantiate_prototype_object (object_p);
}

16
tests/jerry/es2015/regression-test-issue-3250.js Normal file
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@ -0,0 +1,16 @@
// 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 arrowFn = () => { };
assert (arrowFn.prototype === undefined);