michael@0: // Test that on-stack Debugger.Frames are not GC'd even if they are only reachable
michael@0: // from the js::Debugger::frames table.
michael@0: 
michael@0: var g = newGlobal();
michael@0: g.eval("function f(n) { if (n) f(n - 1); debugger; }");
michael@0: var dbg = new Debugger(g);
michael@0: var hits = 0;
michael@0: dbg.onDebuggerStatement = function (frame) {
michael@0:     if (hits === 0) {
michael@0:         for (; frame; frame = frame.older)
michael@0:             frame.seen = true;
michael@0:     } else {
michael@0:         for (; frame; frame = frame.older)
michael@0:             assertEq(frame.seen, true);
michael@0:     }
michael@0:     gc();
michael@0:     hits++;
michael@0: };
michael@0: g.f(20);
michael@0: assertEq(hits, 21);