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Fix VM stack size calculation for class initializer assignments (#4426)

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This patch fixes #4413.

JerryScript-DCO-1.0-Signed-off-by: Robert Fancsik frobert@inf.u-szeged.hu
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Robert Fancsik 2021-01-08 14:08:55 +01:00 committed by GitHub
parent 238f9aab4a
commit b56fa43aa3
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2 changed files with 25 additions and 0 deletions
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7
jerry-core/parser/js/js-parser.c
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@ -2533,6 +2533,13 @@ parser_parse_class_fields (parser_context_t *context_p) /**< context */
if (class_field_type & PARSER_CLASS_FIELD_NORMAL)
{
parser_emit_cbc_literal (context_p, CBC_ASSIGN_PROP_THIS_LITERAL, literal_index);
/* Prepare stack slot for assignment property reference base. Needed by vm.c */
if (context_p->stack_limit == context_p->stack_depth)
{
context_p->stack_limit++;
JERRY_ASSERT (context_p->stack_limit <= PARSER_MAXIMUM_STACK_LIMIT);
}
}
else
{

18
tests/jerry/es.next/regression-test-issue-4413.js Normal file
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@ -0,0 +1,18 @@
// 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.
assert((new (class C2 { x = 5 })).x === 5);
assert((new (class C2 { x = {} + {} })).x === "[object Object][object Object]");
assert((new (class C2 { ["foo"] = 5; x = {} + {} })).foo === 5);
assert((new (class C2 { ["foo"] = 5; x = 6 })).foo === 5);