diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/debug/bug-876654.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/debug/bug-876654.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,13 @@
+// |jit-test| 
+// Exercise finding a DebuggerSource cross compartment wrapper in
+// JSCompartment::findOutgoingEdges()
+
+let g = newGlobal();
+let dbg = new Debugger(g);
+dbg.onNewScript = function (script) {
+  var text = script.source.text;
+}
+g.eval("function f() { function g() {} }");
+gczeal(9, 1)
+var a = {}
+var b = {}