1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/js/src/jit-test/tests/basic/bug504587-1.js Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,13 @@
1.4 +// This test case failed a WIP patch. See https://bugzilla.mozilla.org/show_bug.cgi?id=504587#c68
1.5 +
1.6 +function B() {}
1.7 +B.prototype.x = 1;
1.8 +var d = new B;
1.9 +
1.10 +var names = ['z', 'z', 'z', 'z', 'z', 'z', 'z', 'x'];
1.11 +for (var i = 0; i < names.length; i++) {
1.12 + x = d.x; // guard on shapeOf(d)
1.13 + d[names[i]] = 2; // unpredicted shape change
1.14 + y = d.x; // guard here is elided
1.15 +}
1.16 +assertEq(y, 2); // Assertion failed: got 1, expected 2
