[dpdk-dev] [PATCH] service: fix compilation error

[Van Haaren, Harry]

> From: Yang, Yi Y
> Sent: Wednesday, September 20, 2017 9:31 AM
> To: Van Haaren, Harry <harry.van.haaren at intel.com>
> Cc: dev at dpdk.org; Yang, Yi Y <yi.y.yang at intel.com>
> Subject: [PATCH] service: fix compilation error
> 
>   CC rte_service.o
>   ./dpdk/lib/librte_eal/common/rte_service.c: In function
>     ‘rte_service_start_with_defaults’:
>   ./dpdk/lib/librte_eal/common/rte_service.c:449:9:
>     error: ‘ids[0]’ may be used uninitialized in this
>     function [-Werror=maybe-uninitialized]
>    ret = rte_service_map_lcore_set(i, ids[lcore_iter], 1);
> 
>   cc1: all warnings being treated as errors
>   ./dpdk/mk/internal/rte.compile-pre.mk:138:
>     recipe for target 'rte_service.o' failed
> 
> Signed-off-by: Yi Yang <yi.y.yang at intel.com>

Hi Yi,

Would you provide a more descriptive commit title
and message please? The compilation output should not be
included in the commit message, instead a short description
of what the error is, and what steps can be taken to
reproduce the error are much more helpful.

The code changes look OK to me - but I'd like to be able
to catch these issues in future, so steps to reproduce are
valuable to me.

Thanks, -Harry


> ---
>  lib/librte_eal/common/rte_service.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/lib/librte_eal/common/rte_service.c
> b/lib/librte_eal/common/rte_service.c
> index 43716bb..e598e16 100644
> --- a/lib/librte_eal/common/rte_service.c
> +++ b/lib/librte_eal/common/rte_service.c
> @@ -431,7 +431,7 @@ rte_service_start_with_defaults(void)
>  	uint32_t count = rte_service_get_count();
> 
>  	int32_t lcore_iter = 0;
> -	uint32_t ids[RTE_MAX_LCORE];
> +	uint32_t ids[RTE_MAX_LCORE] = {0};
>  	int32_t lcore_count = rte_service_lcore_list(ids, RTE_MAX_LCORE);
> 
>  	if (lcore_count == 0)
> --
> 2.1.0