michael@0: // frame.live is false for frames discarded during uncatchable error unwinding.
michael@0: 
michael@0: var g = newGlobal();
michael@0: var dbg = Debugger(g);
michael@0: var hits = 0;
michael@0: var snapshot;
michael@0: dbg.onDebuggerStatement = function (frame) {
michael@0:     var stack = [];
michael@0:     for (var f = frame; f; f = f.older) {
michael@0:         if (f.type === "call" && f.script !== null)
michael@0:             stack.push(f);
michael@0:     }
michael@0:     snapshot = stack;
michael@0:     if (hits++ === 0)
michael@0:         assertEq(frame.eval("x();"), null);
michael@0:     else
michael@0:         return null;
michael@0: };
michael@0: 
michael@0: g.eval("function z() { debugger; }");
michael@0: g.eval("function y() { z(); }");
michael@0: g.eval("function x() { y(); }");
michael@0: assertEq(g.eval("debugger; 'ok';"), "ok");
michael@0: assertEq(hits, 2);
michael@0: assertEq(snapshot.length, 3);
michael@0: for (var i = 0; i < snapshot.length; i++)
michael@0:     assertEq(snapshot[i].live, false);