[PATCH:x11proto] Enable gcc attribute(__format__) on gcc versions older than 4.0

[Jeremy Huddleston]

Reviewed-by: Jeremy Huddleston <jeremyhu at apple.com>

On Dec 9, 2010, at 22:34, Alan Coopersmith wrote:

> Enabled on 2.3 and up, since that's where it's available according to
> http://www.ohse.de/uwe/articles/gcc-attributes.html#func-format
> 
> Tested with gcc 3.4.3 on Solaris.
> 
> Signed-off-by: Alan Coopersmith <alan.coopersmith at oracle.com>
> ---
> Xfuncproto.h.in |    8 ++++++--
> 1 files changed, 6 insertions(+), 2 deletions(-)
> 
> diff --git a/Xfuncproto.h.in b/Xfuncproto.h.in
> index 0177119..b624956 100644
> --- a/Xfuncproto.h.in
> +++ b/Xfuncproto.h.in
> @@ -77,10 +77,8 @@ in this Software without prior written authorization from The Open Group.
> 
> #if defined(__GNUC__) && (__GNUC__ >= 4)
> # define _X_SENTINEL(x) __attribute__ ((__sentinel__(x)))
> -# define _X_ATTRIBUTE_PRINTF(x,y) __attribute__((__format__(__printf__,x,y)))
> #else
> # define _X_SENTINEL(x)
> -# define _X_ATTRIBUTE_PRINTF(x,y)
> #endif /* GNUC >= 4 */
> 
> #if defined(__GNUC__) && (__GNUC__ >= 4) && !defined(__CYGWIN__)
> @@ -124,4 +122,10 @@ in this Software without prior written authorization from The Open Group.
> # define _X_NORETURN
> #endif /* GNUC  */
> 
> +#if defined(__GNUC__) && ((__GNUC__ * 100 + __GNUC_MINOR__) >= 203)
> +# define _X_ATTRIBUTE_PRINTF(x,y) __attribute__((__format__(__printf__,x,y)))
> +#else /* not gcc >= 2.3 */
> +# define _X_ATTRIBUTE_PRINTF(x,y)
> +#endif
> +
> #endif /* _XFUNCPROTO_H_ */
> -- 
> 1.7.3.2
> 
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