diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/bug585542.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/bug585542.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,11 @@
+function f() { return 2; }
+function g(o) {
+  with (o) {
+      var f = function() { return 4; }
+  }
+  return f();
+}
+
+assertEq(g({}), 4);
+
+