diff --git a/jerry-core/ecma/operations/ecma-array-object.c b/jerry-core/ecma/operations/ecma-array-object.c index fb97e68fd..506daaad0 100644 --- a/jerry-core/ecma/operations/ecma-array-object.c +++ b/jerry-core/ecma/operations/ecma-array-object.c @@ -431,6 +431,11 @@ ecma_delete_fast_array_properties (ecma_object_t *object_p, /**< fast access mod old_aligned_length * sizeof (ecma_value_t), new_aligned_length * sizeof (ecma_value_t)); + for (uint32_t i = new_length; i < new_aligned_length; i++) + { + new_values_p[i] = ECMA_VALUE_ARRAY_HOLE; + } + ext_obj_p->u.array.length = new_length; ECMA_SET_POINTER (object_p->u1.property_list_cp, new_values_p); diff --git a/tests/jerry/regression-test-issue-3039.js b/tests/jerry/regression-test-issue-3039.js new file mode 100644 index 000000000..47ddc46ad --- /dev/null +++ b/tests/jerry/regression-test-issue-3039.js @@ -0,0 +1,23 @@ +// 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 = []; +for (var i = 0; i < 200; ++i) { + a[ i ] = 0; +} + +a.length = 1; +for (var i = 0; i < 5; ++i) { + a[ i ] = 0; +}