[SLOF] [PATCH slof] libc: fix build in C23 mode

[Vaibhav Jain]

Hit the same problem recently with GCC-15 and had a similar fix in my
tree.

yselkowi at redhat.com writes:

> GCC 15 defaults to C23, in which bool, true, and false are keywords.
>
> Signed-off-by: Yaakov Selkowitz <yselkowi at redhat.com>
> Signed-off-by: Alexey Kardashevskiy <aik at ozlabs.ru>
Hence,

Tested-by: Vaibhav Jain <vaibhav at linux.ibm.com>

> ---
>
> This should be a common breakage but I have not managed google
> a common solution for this, what do others do?
>
> ---
>  lib/libc/include/stdbool.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/lib/libc/include/stdbool.h b/lib/libc/include/stdbool.h
> index 5b7d36a7effb..0e0f8c682ec4 100644
> --- a/lib/libc/include/stdbool.h
> +++ b/lib/libc/include/stdbool.h
> @@ -13,7 +13,7 @@
>  #ifndef _STDBOOL_H
>  #define _STDBOOL_H
>  
> -#ifndef __cplusplus
> +#if !defined(__cplusplus) && __STDC_VERSION__ < 202311L
>  typedef enum { false = 0, true } bool;
>  #endif
>  
> -- 
> 2.49.0

-- 
Cheers
~ Vaibhav