michael@0: // |jit-test| debug
michael@0: 
michael@0: function f(){
michael@0:   this.zzz.zzz;
michael@0:   for(let d in []);
michael@0: }
michael@0: trap(f, 16, '')
michael@0: try {
michael@0:     f()
michael@0: } catch(e) {
michael@0:     caught = true;
michael@0:     assertEq(""+e, "TypeError: this.zzz is undefined");
michael@0: }
michael@0: assertEq(caught, true);