[Freeciv-Dev] Re: (PR#3427) Remove noreturn attribute

["Raimar Falke" <rf13@xxxxxxxxxxxxxxxxx>]

On Thu, Feb 27, 2003 at 01:42:21AM -0800, Jason Short wrote:
> Raimar Falke wrote:
> > On Thu, Feb 27, 2003 at 12:37:16AM -0800, Jason Short wrote:
> 
> >>Can you point to any documentation on portably using variadic arguments
> >>in macros?
> > 
> > 
> > This construct is part of the C99 standard.
> > 
> > 6.10.3.1 Argument substitution
> > ...
> > 
> > An identifier __VA_ARGS__ that occurs in the replacement list shall be
> > treated as if it were a parameter, and the variable arguments shall
> > form the preprocessing tokens used to replace it.
> > 
> > There is also a nice example of its usage in "6.10.3.5 Scope of macro
> > definitions".
> 
> Well, that's good, but unfortunately it brings us back to the C99 argument.
> 
> I'm in favor of using C99 (instead of C89).

Me too. At least this feature is supported by icc 6.0, gcc 2.96 and
3.2 and "Sun WorkShop 6 update 2 C 5.3". The test is easy:

$ cat a.c
#define x(...) #__VA_ARGS__

x(a,b)
$ gcc -E a.c
# 1 "a.c"
# 1 "<built-in>"
# 1 "<command line>"
# 1 "a.c"


"a,b"
$

So if you have access to other compilers please test and report the
results.

        Raimar

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