diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/auto-regress/bug759306.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/auto-regress/bug759306.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,20 @@
+// |jit-test| error:InternalError
+
+// Binary: cache/js-dbg-32-4ce3983a43f4-linux
+// Flags:
+//
+
+function assertEq(setter) {
+        if (setter > 10)
+            return {assertEq: 3.3};
+        return {__proto__: assertEq(setter + 1)};
+    }
+function testX() {
+  var x = 2;
+  var local0 = x;
+  return { local0: local0 };
+}
+var resultsX = testX();
+assertEq(resultsX.local0, 2);
+gczeal(2);
+assertEq(new (Proxy.createFunction({}, function(){}, function(){})), undefined);