diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/testDoubleZeroInSwitch2.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/testDoubleZeroInSwitch2.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,9 @@
+var arr = new Float32Array(1);
+arr[0] = 15;
+var a = arr[0];
+assertEq(a, 15);
+switch (a) {
+  case 15: break;
+  default: throw "FAIL";
+}
+