diff -r 000000000000 -r 6474c204b198 browser/base/content/test/general/browser_bug664672.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/base/content/test/general/browser_bug664672.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,19 @@
+function test() {
+  waitForExplicitFinish();
+
+  var tab = gBrowser.addTab();
+
+  tab.addEventListener("TabClose", function () {
+    tab.removeEventListener("TabClose", arguments.callee, false);
+
+    ok(tab.linkedBrowser, "linkedBrowser should still exist during the TabClose event");
+
+    executeSoon(function () {
+      ok(!tab.linkedBrowser, "linkedBrowser should be gone after the TabClose event");
+
+      finish();
+    });
+  }, false);
+
+  gBrowser.removeTab(tab);
+}