diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/debug/cross-context-2.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/debug/cross-context-2.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,32 @@
+// The debugger can eval in any frame in the stack even if every frame was
+// pushed in a different context.
+
+var g = newGlobal();
+g.eval('function f(a) {\n' +
+       '    if (a == 1)\n' +
+       '        debugger;\n' +
+       '    else\n' +
+       '        evaluate("f(" + a + " - 1);", {newContext: true});\n' +
+       '}\n');
+var N = 9;
+
+var dbg = new Debugger(g);
+var frames = [];
+var hits = 0;
+dbg.onEnterFrame = function (frame) {
+    if (frame.type == "call" && frame.callee.name == "f") {
+        frames.push(frame);
+        frame.onPop = function () { assertEq(frames.pop(), frame); };
+    }
+};
+dbg.onDebuggerStatement = function (frame) {
+    assertEq(frames.length, N);
+    var i = N;
+    for (var f of frames)
+        assertEq(f.eval('a').return, i--);
+    hits++;
+};
+
+g.f(N);
+assertEq(hits, 1);
+assertEq(frames.length, 0);