diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/jaeger/tableSwitchDouble.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/jaeger/tableSwitchDouble.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,13 @@
+
+function f(a) {
+    switch(a) {
+        case 3: return 3;
+        case 4: return 4;
+        default: return -1;
+    }
+}
+
+assertEq(f(-0.0), -1);
+assertEq(f(3.14), -1);
+assertEq(f(12.34), -1);
+