Re: [PATCH 05/23] io/channel-websock: Replace strlen(const_str) by sizeof(const_str) - 1

[Daniel P . Berrangé]

On Wed, May 05, 2021 at 11:10:29PM +0200, Philippe Mathieu-Daudé wrote:
> The combined_key[... QIO_CHANNEL_WEBSOCK_GUID_LEN ...] array in
> qio_channel_websock_handshake_send_res_ok() expands to a call
> to strlen(QIO_CHANNEL_WEBSOCK_GUID), and the compiler doesn't
> realize the string is const, so consider combined_key[] being
> a variable-length array.
> 
> To remove the variable-length array, we provide it a hint to
> the compiler by using sizeof() - 1 instead of strlen().
> 
> Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> ---
>  io/channel-websock.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>


Regards,
Daniel
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