diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/ion/bug886246.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/ion/bug886246.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,11 @@
+function f(x)
+{
+    x = x|0;
+    return ~~((x ? 1.0e60 : 1.0e60) + 1.0);
+}
+
+var r = -1;
+for(var i = 0; i < 20000; i++) {
+    r = f();
+}
+assertEq(r, 0);