michael@0: function a(code) {
michael@0:   var f = new Function("for each(let x in[false,'',/x/,'',{}]){if(x<x){(({}))}else if(x){}else{}}");
michael@0:   try {
michael@0:     f()
michael@0:   } catch(e) {}
michael@0: }
michael@0: a()
michael@0: a()
michael@0: 
michael@0: /* Don't crash (CLI only). */
michael@0: