🚀 go-pugleaf

In article <47m4dl$eje@gaia.ns.utk.edu> elemings@unix1.utm.edu (Eric Lemings) writes:
>#include <stdio.h>
>
>#define f(x, y) ((x) / (y))
>
>int (f)(int x, int y, int z)
>  {
>  return (x * y + z);
>  }
>
>int main(void)
>  {
>  int a = f(9, 2);
>  int b = (f)(9, 2, 4);
>
>  printf("f(9, 2) = %d", a);
>  printf("(f)(9, 2, 4) = %d", b);
>
>  return (0);
>  }
>
>Hunting season is now open.  I tried this on a Standard C/Unix
>system compiler and it worked.  Not sure how useful it is though.

It has better work.  I suppose this does buy you one overload on
some names.  This is of course of little utility to most programs,
and works because of Standard C tokenization considerations and hence
hijacks it being recognized as a macro name.  When useful, it can buy you
things such as:
(1) It says "this is what I want" because a header or macro cannot
    override it.
(2) A pointer to a function-like macro is not possible and you'll need
    (at least) its prototype if a "real function" is somewhere.

- Greg
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