michael@0: // Clearing a frame's onPop handler works.
michael@0: var g = newGlobal();
michael@0: g.eval("function f() { debugger; }");
michael@0: var dbg = new Debugger(g);
michael@0: 
michael@0: var log;
michael@0: dbg.onEnterFrame = function handleEnter(f) {
michael@0:     log += "(";
michael@0:     f.onPop = function handlePop() {
michael@0:         assertEq("handlePop was called", "handlePop should never be called");
michael@0:     };
michael@0: };
michael@0: dbg.onDebuggerStatement = function handleDebugger(f) {
michael@0:     log += "d";
michael@0:     assertEq(typeof f.onPop, "function");
michael@0:     f.onPop = undefined;
michael@0: };
michael@0: log = '';
michael@0: g.f();
michael@0: assertEq(log, "(d");