Compressed output resuts in ReferenceError: argument_1 is not defined #709

{
  compress: {
    arguments: true,
    keep_fargs: false,
  },
}

a(function (b) {
b.c = c;
function c() {
  return arguments[1];
}
});

a((function(n){n.c=function(){return argument_1}}));

a((function(n){n.c=function(){return arguments[1]}}));

a((function(n){n.c=function(x,y){return y}}));