1 ReferenceError: <function>:1:50 Invalid left hand side for assignment
   2 /*infloop*/while(((function ()4.)([z1,,], [,,]) - true++))switch(1e+81.x) { default: break;      }
   3                                                   ^
   4 SyntaxError: <function>:1:5 Expected l-value but found )
   5 if(--) y;
   6      ^