diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/bug653438.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/bug653438.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,2 @@
+assertEq((123456789).toExponential(), "1.23456789e+8");
+assertEq((123456789).toExponential(undefined), "1.23456789e+8");