diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/gc/bug-886560.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/gc/bug-886560.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,7 @@
+// |jit-test| error: x is not defined
+setObjectMetadataCallback(function(obj) {
+    var res = {};
+    return res;
+  });
+gczeal(4);
+x();