diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/debug/Frame-02.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/debug/Frame-02.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,24 @@
+// When the debugger is triggered twice from the same stack frame, the same
+// Debugger.Frame object is passed to the hook both times.
+
+var g = newGlobal();
+var hits, frame;
+var dbg = Debugger(g);
+dbg.onDebuggerStatement = function (f) {
+    if (hits++ == 0)
+        frame = f;
+    else
+        assertEq(f, frame);
+};
+
+hits = 0;
+g.evaluate("debugger; debugger;");
+assertEq(hits, 2);
+
+hits = 0;
+g.evaluate("function f() { debugger; debugger; }  f();");
+assertEq(hits, 2);
+
+hits = 0;
+g.evaluate("eval('debugger; debugger;');");
+assertEq(hits, 2);