diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/ion/bug807047.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/ion/bug807047.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,9 @@
+function f(code) {
+    eval(code)
+}
+f("\
+    function h({x}) {\
+        print(x)\
+    }\
+    h(/x/);\
+")