I just wrote in my previous message 
http://gcc.gnu.org/ml/gcc/2007-01/msg00958.html [....]

> 2. To have a definition of VARYING_SIZE is some of our header files
> (config.h, or system.h or others) which is 1 for old compilers and
> empty for new ones (including gcc itself), maybe
> 
>   #if (defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L)
>   #define VARYING_SIZE 1
>   #else
>   #define VARYING_SIZE /*empty*/
>   #endif

I made a mistake above, I meant the symetrical

  #if (defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L)
  #define VARYING_SIZE /*empty*/
  #else
  #define VARYING_SIZE 1
  #endif

Sorry for the mistake.
-- 
Basile STARYNKEVITCH         http://starynkevitch.net/Basile/ 
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