diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/testCondSwitch2.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/testCondSwitch2.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,33 @@
+
+var C1 = 1;
+var C2 = 2;
+const C3 = 3;
+
+function f(x) {
+    var s = "";
+
+    switch(x) {
+    case C1:
+        s += "1";
+    case C2:
+        s += "2";
+        break;
+    case C3:
+        s += "3";
+    default:
+        s += "d";
+    case 4:
+        s += "4";
+    }
+    return s;
+}
+assertEq(f(1), "12");
+assertEq(f(2), "2");
+assertEq(f(3), "3d4");
+assertEq(f(4), "4");
+
+assertEq(f(0), "d4");
+assertEq(f(-0), "d4");
+
+assertEq(f(true), "d4");
+