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Re: [PATCH] tests/unit/test-block-iothread: fix maybe-uninitialized erro
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From: |
Alberto Garcia |
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Subject: |
Re: [PATCH] tests/unit/test-block-iothread: fix maybe-uninitialized error on GCC 11 |
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Date: |
Sun, 21 Mar 2021 13:53:53 +0100 |
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User-agent: |
Notmuch/0.18.2 (http://notmuchmail.org) Emacs/24.4.1 (i586-pc-linux-gnu) |
On Fri 19 Mar 2021 12:22:18 PM CET, Emanuele Giuseppe Esposito
<eesposit@redhat.com> wrote:
> When building qemu with GCC 11, test-block-iothread produces the following
> warning:
>
> ../tests/unit/test-block-iothread.c:148:11: error: ‘buf’ may be used
> uninitialized [-Werror=maybe-uninitialized]
>
> This is caused by buf[512] left uninitialized and passed to
> bdrv_save_vmstate() that expects a const uint8_t *, so the compiler
> assumes it will be read and expects the parameter to be initialized.
>
> Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Berto