diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/testStringToInt32.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/testStringToInt32.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,6 @@
+function testStringToInt32() {
+    var s = "";
+    for (let j = 0; j < 5; ++j) s += ("1e+81" ^  3);
+    return s;
+}
+assertEq(testStringToInt32(), "33333");