diff options
Diffstat (limited to 'js/src/jit-test/tests/basic/bug504587-1.js')
| -rw-r--r-- | js/src/jit-test/tests/basic/bug504587-1.js | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/basic/bug504587-1.js b/js/src/jit-test/tests/basic/bug504587-1.js new file mode 100644 index 0000000000..a489f99cac --- /dev/null +++ b/js/src/jit-test/tests/basic/bug504587-1.js @@ -0,0 +1,13 @@ +// This test case failed a WIP patch. See https://bugzilla.mozilla.org/show_bug.cgi?id=504587#c68 + +function B() {} +B.prototype.x = 1; +var d = new B; + +var names = ['z', 'z', 'z', 'z', 'z', 'z', 'z', 'x']; +for (var i = 0; i < names.length; i++) { + x = d.x; // guard on shapeOf(d) + d[names[i]] = 2; // unpredicted shape change + y = d.x; // guard here is elided +} +assertEq(y, 2); // Assertion failed: got 1, expected 2 |