diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/jaeger/bug645985.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/jaeger/bug645985.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,5 @@
+function f(o) {
+    o += "";
+    o.hasOwnProperty("x");
+}
+f({});