diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/auto-regress/bug687398.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/auto-regress/bug687398.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,9 @@
+// Binary: cache/js-dbg-64-06445f55f009-linux
+// Flags:
+//
+
+var handler = { "\u0039" : function() {} };
+var g = newGlobal();
+if (typeof findReferences == 'function') {
+  findReferences(g);
+}