Csaba Osztrogonác
de38764e88
2nd and 3rd argument evaluation of Array.prototype.copyWithin can change the length of the array as a side-effect. But ES11 spec says that the algorithm should use the original length. In this case it could happen that the underlying buffer should be extended. Fixes #4204 JerryScript-DCO-1.0-Signed-off-by: Csaba Osztrogonác csaba.osztrogonac@h-lab.eu
51 lines
1.5 KiB
JavaScript
51 lines
1.5 KiB
JavaScript
// 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.
|
|
|
|
// helper function - simple implementation
|
|
Array.prototype.equals = function (array) {
|
|
if (this.length != array.length)
|
|
return false;
|
|
|
|
for (var i = 0; i < this.length; i++) {
|
|
if (this[i] instanceof Array && array[i] instanceof Array) {
|
|
if (!this[i].equals(array[i]))
|
|
return false;
|
|
}
|
|
else if (this[i] != array[i]) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
function longDenseArray(){
|
|
var a = [0];
|
|
for(var i = 0; i < 60; i++){
|
|
a[i] = i;
|
|
}
|
|
return a;
|
|
}
|
|
|
|
function shorten(){
|
|
currArray.length = 20;
|
|
return 1;
|
|
}
|
|
|
|
var array = [0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,,,,,,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19];
|
|
var currArray = longDenseArray();
|
|
currArray.copyWithin(25, {valueOf: shorten})
|
|
assert (currArray.length == 44)
|
|
assert (currArray.equals (array))
|