diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/testBug961969.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/testBug961969.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,2 @@
+(()=>{ var x,y,z; ()=>{x++;y++;z++} })();
+(()=>{ var x,y; if (true) { function z() { x++;y++ } } })();