michael@0: // Dispatching an event to a debugger must keep enough of it gc-alive to avoid
michael@0: // crashing.
michael@0: 
michael@0: var g = newGlobal();
michael@0: var hits;
michael@0: 
michael@0: function addDebug() {
michael@0:     // The loop is here to defeat the conservative GC. :-\
michael@0:     for (var i = 0; i < 4; i++) {
michael@0:         var dbg = new Debugger(g);
michael@0:         dbg.onDebuggerStatement = function (stack) {
michael@0:             hits++;
michael@0:             this.enabled = false;
michael@0:             this.onDebuggerStatement = undefined;
michael@0:             gc();
michael@0:         };
michael@0:         if (i > 0) {
michael@0:             dbg.enabled = false;
michael@0:             dbg.onDebuggerStatement = undefined;
michael@0:             dbg = null;
michael@0:         }
michael@0:     }
michael@0: }
michael@0: 
michael@0: addDebug();
michael@0: hits = 0;
michael@0: g.eval("debugger;");
michael@0: assertEq(hits, 1);