The Tor Browser / file revision

 // An onPop handler in a disabled Debugger's frame shouldn't fire.

 var g = newGlobal();

 var dbg = new Debugger(g);

 g.eval('function f() { debugger; }');

 var log;

 dbg.onEnterFrame = function handleEnterFrame(f) {

     log += '(';

     assertEq(f.callee.name, 'f');

     f.onPop = function handlePop(c) {

         log += ')';

         assertEq(dbg.enabled, true);

     };

 };

 var enable;

 dbg.onDebuggerStatement = function handleDebugger(f) {

     dbg.enabled = enable;

 }

 // This should fire the onEnterFrame and onPop handlers.

 log = 'a';

 enable = true;

 g.f();

 // This should fire the onEnterFrame handler, but not the onPop.

 log += 'b';

 enable = false;

 g.f();

 // This should fire neither.

 log += 'c';

 dbg.enabled = false;

 enable = false;

 g.f();

 // This should fire both again.

 log += 'd';

 dbg.enabled = true;

 enable = true;

 g.f();

 assertEq(log, 'a()b(cd()');