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Wed, 18 Dec 2019 08:17:25 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 90A881136420; Wed, 18 Dec 2019 09:17:21 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1576657050; 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=kwVgQiqUas/9oZI843AIMDOvEyABlfBpXV+9isyvvAE=; b=CRzwO3KlYQ9UPxitFNjZy2/DKfsAHmf7pSwiar0ryrwXeTVs8wpFnykoQeVa+SG3oD1SSc lBOBkRj9Kk4iBVXPnylCx/EKxT9XSkSh65a33eG7UJlP5M3Oxxv1c61PzxhIIpNC1JtYBo sdnb38PyO7VYzRQJ3fDNw+UaE6jEtD8= From: Markus Armbruster To: qemu-devel@nongnu.org Subject: [PULL v2 16/35] error: make Error **errp const where it is appropriate Date: Wed, 18 Dec 2019 09:17:02 +0100 Message-Id: <20191218081721.23520-17-armbru@redhat.com> In-Reply-To: <20191218081721.23520-1-armbru@redhat.com> References: <20191218081721.23520-1-armbru@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-MC-Unique: mlMcEDwwMy-m1LzNcVaO8g-1 X-Mimecast-Spam-Score: 0 Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 205.139.110.120 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Vladimir Sementsov-Ogievskiy , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @redhat.com) Content-Type: text/plain; charset="utf-8" From: Vladimir Sementsov-Ogievskiy Mostly, Error ** is for returning error from the function, so the callee sets it. However these three functions get already filled errp parameter. They don't change the pointer itself, only change the internal state of referenced Error object. So we can make it Error *const * errp, to stress the behavior. It will also help coccinelle script (in future) to distinguish such cases from common errp usage. Signed-off-by: Vladimir Sementsov-Ogievskiy Message-Id: <20191205174635.18758-4-vsementsov@virtuozzo.com> Reviewed-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Markus Armbruster [Commit message typo fixed] Signed-off-by: Markus Armbruster --- include/qapi/error.h | 6 +++--- util/error.c | 6 +++--- 2 files changed, 6 insertions(+), 6 deletions(-) diff --git a/include/qapi/error.h b/include/qapi/error.h index 3f95141a01..ad5b6e896d 100644 --- a/include/qapi/error.h +++ b/include/qapi/error.h @@ -233,13 +233,13 @@ void error_propagate_prepend(Error **dst_errp, Error = *local_err, * Prepend some text to @errp's human-readable error message. * The text is made by formatting @fmt, @ap like vprintf(). */ -void error_vprepend(Error **errp, const char *fmt, va_list ap); +void error_vprepend(Error *const *errp, const char *fmt, va_list ap); =20 /* * Prepend some text to @errp's human-readable error message. * The text is made by formatting @fmt, ... like printf(). */ -void error_prepend(Error **errp, const char *fmt, ...) +void error_prepend(Error *const *errp, const char *fmt, ...) GCC_FMT_ATTR(2, 3); =20 /* @@ -256,7 +256,7 @@ void error_prepend(Error **errp, const char *fmt, ...) * May be called multiple times. The resulting hint should end with a * newline. */ -void error_append_hint(Error **errp, const char *fmt, ...) +void error_append_hint(Error *const *errp, const char *fmt, ...) GCC_FMT_ATTR(2, 3); =20 /* diff --git a/util/error.c b/util/error.c index d4532ce318..b6c89d1412 100644 --- a/util/error.c +++ b/util/error.c @@ -121,7 +121,7 @@ void error_setg_file_open_internal(Error **errp, "Could not open '%s'", filename); } =20 -void error_vprepend(Error **errp, const char *fmt, va_list ap) +void error_vprepend(Error *const *errp, const char *fmt, va_list ap) { GString *newmsg; =20 @@ -136,7 +136,7 @@ void error_vprepend(Error **errp, const char *fmt, va_l= ist ap) (*errp)->msg =3D g_string_free(newmsg, 0); } =20 -void error_prepend(Error **errp, const char *fmt, ...) +void error_prepend(Error *const *errp, const char *fmt, ...) { va_list ap; =20 @@ -145,7 +145,7 @@ void error_prepend(Error **errp, const char *fmt, ...) va_end(ap); } =20 -void error_append_hint(Error **errp, const char *fmt, ...) +void error_append_hint(Error *const *errp, const char *fmt, ...) { va_list ap; int saved_errno =3D errno; --=20 2.21.0