Re: [dpdk-dev] [PATCH] test/prefetch: fix build with GCC 11

[Ali Alnubani <alialnu@nvidia.com>]

> -----Original Message-----
> From: Kevin Traynor <ktraynor@redhat.com>
> Sent: Thursday, May 20, 2021 2:06 PM
> To: dev@dpdk.org
> Cc: ferruh.yigit@intel.com; Kevin Traynor <ktraynor@redhat.com>;
> stable@dpdk.org; Ali Alnubani <alialnu@nvidia.com>
> Subject: [PATCH] test/prefetch: fix build with GCC 11
> 
> GCC 11 complains that 'a' is uninitialized.
> 
> ../dpdk/app/test/test_prefetch.c: In function 'test_prefetch':
> ../dpdk/app/test/test_prefetch.c:25:9:
> error: 'a' may be used uninitialized [-Werror=maybe-uninitialized]
>    25 |         rte_prefetch0(&a);
>       |         ^~~~~~~~~~~~~~~~~
> 
> Fix by initializing 'a'.
> 
> Bugzilla ID: 714
> Fixes: af75078fece3 ("first public release")
> Cc: stable@dpdk.org
> 
> Reported-by: Ali Alnubani <alialnu@nvidia.com>
> Signed-off-by: Kevin Traynor <ktraynor@redhat.com>
> ---
>  app/test/test_prefetch.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/app/test/test_prefetch.c b/app/test/test_prefetch.c index
> 5489885b51..7b4a8e4144 100644
> --- a/app/test/test_prefetch.c
> +++ b/app/test/test_prefetch.c
> @@ -21,5 +21,5 @@ static int
>  test_prefetch(void)
>  {
> -	int a;
> +	int a = 0;
> 
>  	rte_prefetch0(&a);
> --
> 2.31.1

Was about to send a fix 😊.
Thank you Kevin.

Build is now passing.
Tested-by: Ali Alnubani <alialnu@nvidia.com>

- Ali