diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/closures/name-both-hvy.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/closures/name-both-hvy.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,28 @@
+actual = '';
+expected = '';
+
+// do not crash
+
+function q() {
+}
+
+function f() {
+  var j = 12;
+
+  function g() {
+    eval(""); // makes |g| heavyweight
+    for (var i = 0; i < 3; ++i) {
+      j;
+    }
+  }
+
+  j = 13;
+  q(g);  // escaping |g| makes |f| heavyweight
+  g();
+  j = 14;
+}
+
+f();
+
+
+assertEq(actual, expected)