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 // Test that Ion frames are invalidated by turning on Debugger. Invalidation

 // is unobservable, but we know that Ion scripts cannot handle Debugger

 // handlers, so we test for the handlers being called.

 load(libdir + "jitopts.js");

 if (!jitTogglesMatch(Opts_Ion2NoParallelCompilation))

   quit();

 withJitOptions(Opts_Ion2NoParallelCompilation, function () {

   var g = newGlobal();

   var dbg = new Debugger;

   var onPopExecuted = false;

   var breakpointHit = false;

   g.toggle = function toggle(d) {

     if (d) {

       dbg.addDebuggee(g);

       var frame1 = dbg.getNewestFrame();

       assertEq(frame1.implementation, "ion");

       frame1.onPop = function () {

         onPopExecuted = true;

       };

       var frame2 = frame1.older;

       assertEq(frame2.implementation, "ion");

       // Offset of |print(42 + 42)|

       var offset = frame2.script.getLineOffsets(3)[0];

       frame2.script.setBreakpoint(offset, { hit: function (fr) {

         assertEq(fr.implementation != "ion", true);

         breakpointHit = true;

       }});

     }

   };

   g.eval("" + function f(d) {

     g(d);

     print(42 + 42);

   });

   g.eval("" + function g(d) { toggle(d); });

   g.eval("(" + function test() {

     for (var i = 0; i < 5; i++)

       f(false);

     f(true);

   } + ")();");

   assertEq(onPopExecuted, true);

   assertEq(breakpointHit, true);

 });