From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 21:33:14 +0200 Subject: Adding upstream version 115.7.0esr. Signed-off-by: Daniel Baumann --- .../non262/extensions/array-length-protochange.js | 35 ++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 js/src/tests/non262/extensions/array-length-protochange.js (limited to 'js/src/tests/non262/extensions/array-length-protochange.js') diff --git a/js/src/tests/non262/extensions/array-length-protochange.js b/js/src/tests/non262/extensions/array-length-protochange.js new file mode 100644 index 0000000000..aeec8e9a22 --- /dev/null +++ b/js/src/tests/non262/extensions/array-length-protochange.js @@ -0,0 +1,35 @@ +// Any copyright is dedicated to the Public Domain. +// http://creativecommons.org/licenses/publicdomain/ + +//----------------------------------------------------------------------------- +var BUGNUMBER = 548671; +var summary = + "Don't use a shared-permanent inherited property to implement " + + "[].length or (function(){}).length"; + +print(BUGNUMBER + ": " + summary); + +/************** + * BEGIN TEST * + **************/ + +var a = [1, 2, 3]; +a.__proto__ = null; +reportCompare("length" in a, true, "length should be own property of array"); +reportCompare(Object.hasOwnProperty.call(a, "length"), true, + "length should be own property of array"); +reportCompare(a.length, 3, "array length should be 3"); + +var a = [], b = []; +b.__proto__ = a; +reportCompare(b.hasOwnProperty("length"), true, + "length should be own property of array"); +b.length = 42; +reportCompare(b.length, 42, "should have mutated b's (own) length"); +reportCompare(a.length, 0, "should not have mutated a's (own) length"); + + +if (typeof reportCompare === "function") + reportCompare(true, true); + +print("All tests passed!"); -- cgit v1.2.3