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From: "Ananyev, Konstantin" <konstantin.ananyev@intel.com>
To: Kevin Traynor <ktraynor@redhat.com>, "dev@dpdk.org" <dev@dpdk.org>
Cc: "stable@dpdk.org" <stable@dpdk.org>,
	"Nicolau, Radu" <radu.nicolau@intel.com>,
	Akhil Goyal <akhil.goyal@nxp.com>
Subject: Re: [dpdk-stable] [PATCH v2 2/2] examples/ipsec-gw: fix gcc 10 maybe-uninitialized warning
Date: Wed, 11 Mar 2020 12:04:56 +0000
Message-ID: <SN6PR11MB25583A89563D163BCF3889959AFC0@SN6PR11MB2558.namprd11.prod.outlook.com> (raw)
In-Reply-To: <20200311113300.32487-2-ktraynor@redhat.com>



> -----Original Message-----
> From: Kevin Traynor <ktraynor@redhat.com>
> Sent: Wednesday, March 11, 2020 11:33 AM
> To: dev@dpdk.org
> Cc: Kevin Traynor <ktraynor@redhat.com>; stable@dpdk.org; Ananyev, Konstantin <konstantin.ananyev@intel.com>; Nicolau, Radu
> <radu.nicolau@intel.com>; Akhil Goyal <akhil.goyal@nxp.com>
> Subject: [PATCH v2 2/2] examples/ipsec-gw: fix gcc 10 maybe-uninitialized warning
> 
> gcc 10.0.1 reports:
> 
> ../examples/ipsec-secgw/ipsec_process.c: In function ‘ipsec_process’:
> ../examples/ipsec-secgw/ipsec_process.c:132:34:
> error: ‘grp.m’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
>   132 |    grp[n].cnt = pkts + i - grp[n].m;
>       |                            ~~~~~~^~
> 
> This is a correct warning for the initial execution of the statement.
> However, it is the design of the loop that grp[0].cnt will later be
> written with the correct value using an initialized grp[0].m before it
> is used.
> 
> In order to remove the warning, initialize grp[0].m for the initial and
> unused calculation of grp[0].cnt.
> 
> Fixes: 3e5f4625dc17 ("examples/ipsec-secgw: make data-path to use IPsec library")
> Cc: stable@dpdk.org
> 
> Suggested-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
> Signed-off-by: Kevin Traynor <ktraynor@redhat.com>
> ---
> v2: just initialize grp[0].m instead of the full array.
> 
> note, commit log violates line length but I didn't want to split warning msg.
> 
> Cc: konstantin.ananyev@intel.com
> Cc: Radu Nicolau <radu.nicolau@intel.com>
> Cc: Akhil Goyal <akhil.goyal@nxp.com>
> ---
>  examples/ipsec-secgw/ipsec_process.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/examples/ipsec-secgw/ipsec_process.c b/examples/ipsec-secgw/ipsec_process.c
> index bb2f2b82d..6d3a3c9a1 100644
> --- a/examples/ipsec-secgw/ipsec_process.c
> +++ b/examples/ipsec-secgw/ipsec_process.c
> @@ -127,4 +127,5 @@ sa_group(void *sa_ptr[], struct rte_mbuf *pkts[],
> 
>  	sa = nosa;
> +	grp[0].m = pkts;
>  	for (i = 0, n = 0; i != num; i++) {
> 
> --

Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>

> 2.21.1


  reply	other threads:[~2020-03-11 12:05 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-20  9:37 [dpdk-stable] [PATCH 1/2] net/avp: " Kevin Traynor
2020-02-20  9:37 ` [dpdk-stable] [PATCH 2/2] examples/ipsec-gw: " Kevin Traynor
2020-02-26  6:12   ` Akhil Goyal
2020-03-10 13:08   ` Ananyev, Konstantin
2020-03-10 18:52     ` Kevin Traynor
2020-03-10 19:03       ` Ananyev, Konstantin
2020-03-11 11:32 ` [dpdk-stable] [PATCH v2 1/2] net/avp: " Kevin Traynor
2020-03-11 11:33   ` [dpdk-stable] [PATCH v2 2/2] examples/ipsec-gw: " Kevin Traynor
2020-03-11 12:04     ` Ananyev, Konstantin [this message]
2020-05-06  9:18       ` [dpdk-stable] [dpdk-dev] " David Marchand
2020-03-11 23:56   ` [dpdk-stable] [PATCH v2 1/2] net/avp: " Webster, Steven
2020-05-06  9:18     ` David Marchand
2020-03-12 13:25   ` [dpdk-stable] [dpdk-dev] " Ferruh Yigit
2020-03-12 14:18     ` Kevin Traynor
2020-03-12 14:31       ` Ferruh Yigit
2020-03-12 15:15         ` Kevin Traynor
2020-03-12 16:47           ` Ferruh Yigit

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