diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/ion/bug798819.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/ion/bug798819.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,10 @@
+if (!this.gcPreserveCode)
+    gcPreserveCode = function() {};
+this.toString = (function() {
+  x.filter(function() {})
+});
+x = [0, 0, 0, 0, 0, 0, 0];
+gcPreserveCode()
+print(this)
+gc();
+this + ''