Re: va_arg *, and why not.

[Geoff Keating <geoffk at cygnus dot com>]

> Cc: gcc-bugs@gcc.gnu.org, gdr@codesourcery.com
> From: Mark Mitchell <mark@codesourcery.com>
> Date: Sun, 16 Jul 2000 20:34:23 -0700

> >>>>> "Geoff" == Geoff Keating <geoffk@cygnus.com> writes:
> 
>     Geoff> The tricky part is that the equivalent can't be a function
>     Geoff> that takes a va_list, otherwise you end up in the same
>     Geoff> dead-end: you don't know if the parameter is a pointer or a
>     Geoff> value.
> 
> Right.  I'm sorry, I meant to imply a libiberty macro.  Something
> like:
> 
>   #ifndef va_copy
>   #define va_copy(DEST, SRC) \
>      memcpy (&DEST, &SRC, sizeof (va_list))
>   #endif
> 
> would probably do the trick, after including the right header files.

Mind, this doesn't work either if DEST or SRC is a parameter to the
procedure using the macro.  It has to be a local variable...

-- 
- Geoffrey Keating <geoffk@cygnus.com>