diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/ion/bug692213.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/ion/bug692213.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,6 @@
+function X(n) {
+    while ((n--)) {
+        switch ( n ) { default : }   
+    }
+}
+(X)(0);