diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/bug851635.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/bug851635.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,7 @@
+
+gcPreserveCode()
+try {
+    eval("({a1:1});e i")
+} catch (e) {}
+gc()
+eval("({a1:1})")