diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/ion/bug973118.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/ion/bug973118.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,4 @@
+function h(x) { return +x == x };
+h(false)
+assertEq(h(null), false);
+assertEq(h(null), false);