setJitCompilerOption('ion.warmup.trigger', 2); setJitCompilerOption('offthread-compilation.enable', 0); var g = newGlobal({newCompartment: true}); var dbg2 = new Debugger; g.toggle = function toggle(x, d) { if (d) { dbg2.addDebuggee(g); dbg2.getNewestFrame().environment.getVariable("x"); } }; g.eval("" + function f(x, d) { toggle(++arguments, d); }); g.eval("(" + function test() { for (var i = 0; i < 30; i++) f(42, false); f(42, true); } + ")();");