[v1] -Werror=maybe-uninitialized fixes

[PATCH 15/19] migration: fix -Werror=maybe-uninitialized false-positive

marcandre.lureau@redhat.com posted 19 patches 1 year, 10 months ago

Diff against v1 v2 v2 v2 v3
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Maintainers: John Snow <jsnow@redhat.com>, Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>, Kevin Wolf <kwolf@redhat.com>, Hanna Reitz <hreitz@redhat.com>, Stefan Hajnoczi <stefanha@redhat.com>, "Michael S. Tsirkin" <mst@redhat.com>, Gerd Hoffmann <kraxel@redhat.com>, Keith Busch <kbusch@kernel.org>, Klaus Jensen <its@irrelevant.dk>, Jesper Devantier <foss@defmacro.it>, Yuval Shaia <yuval.shaia.ml@gmail.com>, Marcel Apfelbaum <marcel.apfelbaum@gmail.com>, Paolo Bonzini <pbonzini@redhat.com>, Fam Zheng <fam@euphon.net>, "Philippe Mathieu-Daudé" <philmd@linaro.org>, Bin Meng <bin.meng@windriver.com>, "Eugenio Pérez" <eperezma@redhat.com>, Peter Xu <peterx@redhat.com>, Fabiano Rosas <farosas@suse.de>, Hyman Huang <yong.huang@smartx.com>, Eric Blake <eblake@redhat.com>, "Alex Bennée" <alex.bennee@linaro.org>, Alexandre Iooss <erdnaxe@crans.org>, Mahmoud Mandour <ma.mandourr@gmail.com>, Pierrick Bouvier <pierrick.bouvier@linaro.org>

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[PATCH 15/19] migration: fix -Werror=maybe-uninitialized false-positive

Posted by marcandre.lureau@redhat.com 1 year, 10 months ago

From: Marc-André Lureau <marcandre.lureau@redhat.com>

../migration/ram.c:1873:23: error: ‘dirty’ may be used uninitialized [-Werror=maybe-uninitialized]

When 'block' != NULL, 'dirty' is initialized.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 migration/ram.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/migration/ram.c b/migration/ram.c
index 8deb84984f..4e26bced31 100644
--- a/migration/ram.c
+++ b/migration/ram.c
@@ -1847,7 +1847,7 @@ static bool get_queued_page(RAMState *rs, PageSearchStatus *pss)
 {
     RAMBlock  *block;
     ram_addr_t offset;
-    bool dirty;
+    bool dirty = false;
 
     do {
         block = unqueue_page(rs, &offset);
-- 
2.44.0

Re: [PATCH 15/19] migration: fix -Werror=maybe-uninitialized false-positive

Posted by Peter Xu 1 year, 10 months ago

On Thu, Mar 28, 2024 at 02:20:48PM +0400, marcandre.lureau@redhat.com wrote:
> From: Marc-André Lureau <marcandre.lureau@redhat.com>
> 
> ../migration/ram.c:1873:23: error: ‘dirty’ may be used uninitialized [-Werror=maybe-uninitialized]
> 
> When 'block' != NULL, 'dirty' is initialized.
> 
> Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>

Acked-by: Peter Xu <peterx@redhat.com>

-- 
Peter Xu