diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/debug/Debugger-debuggees-14.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/debug/Debugger-debuggees-14.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,8 @@
+// Adding a debuggee in a compartment that is already in debug mode works
+// even if a script from that compartment is on the stack.
+
+var g = newGlobal();
+var dbg1 = Debugger(g);
+var dbg2 = Debugger();
+g.parent = this;
+g.eval("parent.dbg2.addDebuggee(this);");