diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/testLongNumToString.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/testLongNumToString.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,7 @@
+function testLongNumToString() {
+    var s;
+    for (var i = 0; i < 5; i++)
+        s = (0x08000000).toString(2);
+    return s;
+}
+assertEq(testLongNumToString(), '1000000000000000000000000000');