diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/gc/bug-821551.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/gc/bug-821551.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,16 @@
+function g() {
+    z = newGlobal('');
+    return function(code) {
+        evalcx(code, z)
+    }
+}
+f = g();
+f("\
+    options('strict_mode');\
+    for (var x = 0; x < 1; ++x) {\
+        a = x;\
+    }\
+    options('strict_mode');\
+");
+f("a in eval");
+