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[ecma-collection] Check whether the header's first chunk is NULL

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Fix Issue: #1997

JerryScript-DCO-1.0-Signed-off-by: Zidong Jiang zidong.jiang@intel.com
This commit is contained in:
Zidong Jiang 2017-09-05 14:19:25 +08:00 committed by yichoi
parent a54427e255
commit c21c21f9f9
2 changed files with 21 additions and 1 deletions
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3
jerry-core/ecma/base/ecma-helpers-values-collection.c
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@ -318,7 +318,8 @@ bool
ecma_collection_iterator_next (ecma_collection_iterator_t *iterator_p) /**< context of iterator */ ecma_collection_iterator_next (ecma_collection_iterator_t *iterator_p) /**< context of iterator */
{ {
if (iterator_p->header_p == NULL if (iterator_p->header_p == NULL
|| unlikely (iterator_p->header_p->unit_number == 0)) || unlikely (iterator_p->header_p->unit_number == 0)
|| unlikely (iterator_p->header_p->first_chunk_cp == JMEM_CP_NULL))
{ {
return false; return false;
} }

19
tests/jerry/es2015/regression-test-issue-1997.js Normal file
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@ -0,0 +1,19 @@
// 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 a = Promise.resolve();
for (var i = 0; i < 200; i++)
{
Promise.race([a]).then();
}