diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/debug/Script-source-02.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/debug/Script-source-02.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,16 @@
+/*
+ * Script.prototype.source should be the same object for both the top-level
+ * script and the script of functions accessed as debuggee values on the global
+ */
+let g = newGlobal();
+let dbg = new Debugger();
+let gw = dbg.addDebuggee(g);
+
+let count = 0;
+dbg.onDebuggerStatement = function (frame) {
+    ++count;
+    assertEq(frame.script.source, gw.makeDebuggeeValue(g.f).script.source);
+}
+
+g.eval("function f() {}; debugger;");
+assertEq(count, 1);