diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/testMulOverflow.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/testMulOverflow.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,6 @@
+function testMulOverflow() {
+    var a = [];
+    for (let j=0;j<5;++j) a.push(0 | ((0x60000009) * 0x60000009));
+    return a.join(",");
+}
+assertEq(testMulOverflow(), "-1073741824,-1073741824,-1073741824,-1073741824,-1073741824");