diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/testBug692274-3.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/testBug692274-3.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,16 @@
+var x = -false;
+switch(x) {
+    case 11: 
+    let y = 42;
+}
+switch(x) {
+    case 11: 
+    let y = 42;
+    let z = 'ponies';
+}
+switch(x) {
+    case 11: 
+    let y = 42;
+    let z = 'ponies';
+    let a = false;
+}