Re: [PATCH RESEND v2 1/2] migration/xbzrle: use ctz64 to avoid undefined result

[Juan Quintela]

Matheus Tavares Bernardino <quic_mathbern@quicinc.com> wrote:
> __builtin_ctzll() produces undefined results when the argument is 0.
> This can be seen through test-xbzrle, which produces the following
> warning:
>
> ../migration/xbzrle.c:265: runtime error: passing zero to ctz(), which is not 
> a valid argument
>
> Replace __builtin_ctzll() with our ctz64() wrapper which properly
> handles 0.
>
> Signed-off-by: Matheus Tavares Bernardino <quic_mathbern@quicinc.com>

Reviewed-by: Juan Quintela <quintela@redhat.com>

queued.