1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000 1.2 +++ b/js/src/jit-test/tests/arrays/pop-nonarray-nonwritable-length.js Wed Dec 31 06:09:35 2014 +0100 1.3 @@ -0,0 +1,13 @@ 1.4 +// Array.prototype.pop does a strict assignment to this.length even if the 1.5 +// caller is nonstrict. Bug 886087. 1.6 + 1.7 +load(libdir + "asserts.js"); 1.8 + 1.9 +// obj.length is read-only 1.10 +var obj = {pop: [].pop, 0: "zero"}; 1.11 +Object.defineProperty(obj, "length", {configurable: true, value: 1, writable: false}); 1.12 +assertThrowsInstanceOf(() => obj.pop(), TypeError); 1.13 + 1.14 +// obj.length has only a getter 1.15 +obj = {pop: [].pop, 0: "zero", get length() { return 1; }}; 1.16 +assertThrowsInstanceOf(() => obj.pop(), TypeError);