On Fri 19 Mar 2021 12:22:18 PM CET, Emanuele Giuseppe Esposito 
<eespo...@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 <eespo...@redhat.com>

Reviewed-by: Alberto Garcia <be...@igalia.com>

Berto

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