[PATCH i-g-t] tests/intel/drm_fdinfo: Fix type comparison warning

[Kamil Konieczny]

Hi Marcin,
On 2024-08-02 at 12:51:20 +0200, Marcin Bernatowicz wrote:
> Resolve a compilation warning caused by comparing distinct pointer
> types without a cast in the max macro usage.
> 
> Cc: Matt Roper <matthew.d.roper at intel.com>
> Cc: Kamil Konieczny <kamil.konieczny at linux.intel.com>
> Fixes: dd461382e7fa ("tests/intel: Apply igt.cocci transforms")
> Signed-off-by: Marcin Bernatowicz <marcin.bernatowicz at linux.intel.com>
> 
> ---
> ../lib/igt_aux.h:229:35: warning: comparison of distinct pointer types
> lacks a cast
>   229 |         (!!(sizeof((typeof(x) *)1 == (typeof(y) *)1)))
>       |                                   ^~
> ../lib/igt_aux.h:246:3: note: in expansion of macro ‘__typecheck’
>   246 |  (__typecheck(x, y) && __no_side_effects(x, y))
>       |   ^~~~~~~~~~~

Thx for quick fix, this is

Reviewed-by: Kamil Konieczny <kamil.konieczny at linux.intel.com>

> ../lib/igt_aux.h:249:24: note: in expansion of macro ‘__safe_cmp’
>   249 |  __builtin_choose_expr(__safe_cmp(x, y), \
>       |                        ^~~~~~~~~~
> ../lib/igt_aux.h:254:19: note: in expansion of macro ‘__careful_cmp’
>   254 | #define max(x, y) __careful_cmp(x, y, >, max)
>       |                   ^~~~~~~~~~~~~
> ../tests/intel/drm_fdinfo.c:808:9: note: in expansion of macro ‘max’
>   808 |  return max(count, 0U);
> 
>  tests/intel/drm_fdinfo.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/tests/intel/drm_fdinfo.c b/tests/intel/drm_fdinfo.c
> index 160dc3d0a..43216a64e 100644
> --- a/tests/intel/drm_fdinfo.c
> +++ b/tests/intel/drm_fdinfo.c
> @@ -805,7 +805,7 @@ static size_t read_fdinfo(char *buf, const size_t sz, int at, const char *name)
>  		buf[count - 1] = 0;
>  	close(fd);
>  
> -	return max(count, 0);
> +	return max_t(typeof(count), count, 0);
>  }
>  
>  /*
> -- 
> 2.31.1
>