On Sat, Apr 15, 2017 at 9:07 AM, Luca Barbato <lu_z...@gentoo.org> wrote:
> It is undefined in C as reported:
>     warning: shifting a negative signed value is undefined
> ---
>  libswscale/output.c | 23 +++++++++++++----------
>  1 file changed, 13 insertions(+), 10 deletions(-)

why are you using a macro to do a simple  << (1 * val) here?

-- 
Vittorio
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