diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/bug823310.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/bug823310.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,7 @@
+"use strict";
+options("werror");
+
+// This construct causes a strict warning, but we shouldn't get one since
+// JSOPTION_EXTRA_WARNINGS isn't enabled.
+var x;
+eval("if (x = 3) {}");