diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/auto-regress/bug648852.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/auto-regress/bug648852.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,12 @@
+// |jit-test| error:TypeError
+
+// Binary: cache/js-dbg-64-d3215d1e985a-linux
+// Flags: -m -n -a
+//
+var toString = 1;
+VERSION = "";
+function startTest() {
+    if (version) if (VERSION == "ECMA_1") {}
+}
+var VERSION = this;
+startTest();