diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/bug673469.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/bug673469.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,9 @@
+var a = Boolean();
+false.__proto__;
+var c = ({}).__proto__;
+var d = {};
+gc()
+c[0] = d;
+for (var x in a) {
+  a[x];
+}