diff --git a/jerry-core/ecma/operations/ecma-array-object.c b/jerry-core/ecma/operations/ecma-array-object.c index f144b8e6bb..ad372a1829 100644 --- a/jerry-core/ecma/operations/ecma-array-object.c +++ b/jerry-core/ecma/operations/ecma-array-object.c @@ -368,6 +368,16 @@ ecma_array_object_delete_property (ecma_object_t *object_p, /**< object */ ecma_free_value_if_not_object (values_p[index]); + if (JERRY_UNLIKELY (ext_obj_p->u.array.length == 1)) + { + const uint32_t old_length_aligned = ECMA_FAST_ARRAY_ALIGN_LENGTH (ext_obj_p->u.array.length); + jmem_heap_free_block (values_p, old_length_aligned * sizeof (ecma_value_t)); + ext_obj_p->u.array.hole_count = 0; + ext_obj_p->u.array.length = 0; + object_p->u1.property_list_cp = JMEM_CP_NULL; + return; + } + values_p[index] = ECMA_VALUE_ARRAY_HOLE; if (++ext_obj_p->u.array.hole_count > ECMA_FAST_ARRAY_MAX_HOLE_COUNT) diff --git a/tests/jerry/es2015/regression-test-issue-3106.js b/tests/jerry/es2015/regression-test-issue-3106.js new file mode 100644 index 0000000000..78a76b5716 --- /dev/null +++ b/tests/jerry/es2015/regression-test-issue-3106.js @@ -0,0 +1,26 @@ +// 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 symbol = Symbol(); +var arr = [{}]; +with (arr.pop()){ + arr.push(symbol.valueOf()); +} + +try { + arr.length = String.fromCharCode(Object.freeze(arr)); + assert(false); +} catch (e) { + assert(e instanceof TypeError); +}