diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/debug/gc-07.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/debug/gc-07.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,9 @@
+// Don't assert with dead Debugger.Object and live cross-compartment wrapper of referent.
+var g = newGlobal();
+for (var j = 0; j < 4; j++) {
+    var dbg = new Debugger;
+    dbg.addDebuggee(g);
+    dbg.enabled = false;
+    dbg = null;
+    gc(); gc();
+}