diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/debug/Source-invisible.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/debug/Source-invisible.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,12 @@
+// Looking at ScriptSourceObjects in invisible-to-debugger compartments is okay.
+
+var gi = newGlobal({ invisibleToDebugger: true });
+gi.eval('function f() {}');
+
+var gv = newGlobal();
+gv.f = gi.f;
+gv.eval('f = clone(f);');
+
+var dbg = new Debugger;
+var gvw = dbg.addDebuggee(gv);
+gvw.getOwnPropertyDescriptor('f').value.script.source;