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c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1727858243; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=S9NRZFHdartb7Ou3+RYml//Je7hyhTH59cssL9F8c9E=; b=BCRGnz+9E36Sx0/wMVhQVvlsVmAB4+biq0a80Ht/mACbMTxd5isv1JGFZS+ivybL+Dwgkw ALv/XiwUBhU6WRizY2yLyWA/UKoHSb5xRzrF69F666A9SAZmiJd+mf3nt6EfqC72GouESE 8sC41EtEkktUAbn0jej6hYJPcLrrJPI= X-MC-Unique: 2waCqk0wMYSHUHE6nH2YuA-1 From: marcandre.lureau@redhat.com To: qemu-devel@nongnu.org Cc: peter.maydell@linaro.org, =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , John Snow , Vladimir Sementsov-Ogievskiy , Kevin Wolf , Hanna Reitz , qemu-block@nongnu.org (open list:Block Jobs) Subject: [PULL 06/22] block/mirror: fix -Werror=maybe-uninitialized false-positive Date: Wed, 2 Oct 2024 12:36:29 +0400 Message-ID: <20241002083646.2893078-7-marcandre.lureau@redhat.com> In-Reply-To: <20241002083646.2893078-1-marcandre.lureau@redhat.com> References: <20241002083646.2893078-1-marcandre.lureau@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.0 on 10.30.177.40 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.133.124; envelope-from=marcandre.lureau@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -21 X-Spam_score: -2.2 X-Spam_bar: -- X-Spam_report: (-2.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.144, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1727858485733116600 From: Marc-Andr=C3=A9 Lureau ../block/mirror.c:404:5: error: =E2=80=98ret=E2=80=99 may be used uninitial= ized [-Werror=3Dmaybe-uninitialized] ../block/mirror.c:895:12: error: =E2=80=98ret=E2=80=99 may be used uninitia= lized [-Werror=3Dmaybe-uninitialized] ../block/mirror.c:578:12: error: =E2=80=98ret=E2=80=99 may be used uninitia= lized [-Werror=3Dmaybe-uninitialized] Change a variable to int, as suggested by Manos: "bdrv_co_preadv() which is int and is passed as an int argument to mirror_read_complete()" Signed-off-by: Marc-Andr=C3=A9 Lureau Reviewed-by: Vladimir Sementsov-Ogievskiy --- block/mirror.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/block/mirror.c b/block/mirror.c index 54e3a7ea9d..2afe700b4d 100644 --- a/block/mirror.c +++ b/block/mirror.c @@ -349,7 +349,7 @@ static void coroutine_fn mirror_co_read(void *opaque) MirrorOp *op =3D opaque; MirrorBlockJob *s =3D op->s; int nb_chunks; - uint64_t ret; + int ret =3D -1; uint64_t max_bytes; =20 max_bytes =3D s->granularity * s->max_iov; @@ -565,7 +565,7 @@ static void coroutine_fn GRAPH_UNLOCKED mirror_iteratio= n(MirrorBlockJob *s) =20 bitmap_set(s->in_flight_bitmap, offset / s->granularity, nb_chunks); while (nb_chunks > 0 && offset < s->bdev_length) { - int ret; + int ret =3D -1; int64_t io_bytes; int64_t io_bytes_acct; MirrorMethod mirror_method =3D MIRROR_METHOD_COPY; @@ -841,7 +841,7 @@ static int coroutine_fn GRAPH_UNLOCKED mirror_dirty_ini= t(MirrorBlockJob *s) int64_t offset; BlockDriverState *bs; BlockDriverState *target_bs =3D blk_bs(s->target); - int ret; + int ret =3D -1; int64_t count; =20 bdrv_graph_co_rdlock(); --=20 2.45.2.827.g557ae147e6