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Fix mapped arguments legacy argument definition initialization (#4434)

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This patch fixes #4432.

JerryScript-DCO-1.0-Signed-off-by: Robert Fancsik frobert@inf.u-szeged.hu
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Robert Fancsik 2021-01-11 12:30:52 +01:00 committed by GitHub
parent edb01f63d5
commit dcf9252892
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2 changed files with 20 additions and 1 deletions
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2
jerry-core/ecma/operations/ecma-arguments-object.c
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@ -137,7 +137,7 @@ ecma_op_create_arguments_object (vm_frame_ctx_shared_args_t *shared_p, /**< shar
ecma_deref_ecma_string (prop_name_p);
prop_value_p->value = argv_p[i];
prop_value_p->value = argv_p[i] == ECMA_VALUE_INITIALIZED ? ECMA_VALUE_UNDEFINED : argv_p[i];
argv_p[i] = ECMA_VALUE_EMPTY;
}
}

19
tests/jerry/es.next/regression-test-issue-4432.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.
function f(x,x,x) {
return arguments[1];
}
assert(f(1) === undefined);