Re: [FFmpeg-devel] [PATCH] tests/checkasm/checkasm.c: Assert that aligned_w/h do not overflow

[Michael Niedermayer <michael@niedermayer.cc>]

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Hi Martin

On Wed, Apr 02, 2025 at 10:42:59AM +0300, Martin Storsjö wrote:
> On Wed, 2 Apr 2025, Michael Niedermayer wrote:
> 
> > Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
> > ---
> > tests/checkasm/checkasm.c | 7 +++++--
> > 1 file changed, 5 insertions(+), 2 deletions(-)
> > 
> > diff --git a/tests/checkasm/checkasm.c b/tests/checkasm/checkasm.c
> > index a5b862fe52e..1cfc4feb488 100644
> > --- a/tests/checkasm/checkasm.c
> > +++ b/tests/checkasm/checkasm.c
> > @@ -58,6 +58,7 @@
> > #include <stdlib.h>
> > #include <string.h>
> > #include "checkasm.h"
> > +#include "libavutil/avassert.h"
> > #include "libavutil/common.h"
> > #include "libavutil/cpu.h"
> > #include "libavutil/intfloat.h"
> > @@ -1189,10 +1190,12 @@ int checkasm_check_##type(const char *file, int line, \
> >                           int align_w, int align_h, \
> >                           int padding) \
> > { \
> > -    int aligned_w = (w + align_w - 1) & ~(align_w - 1); \
> > -    int aligned_h = (h + align_h - 1) & ~(align_h - 1); \
> > +    int64_t aligned_w = (w - 1LL + align_w) & ~(align_w - 1); \
> > +    int64_t aligned_h = (h - 1LL + align_h) & ~(align_h - 1); \
> >     int err = 0; \
> >     int y = 0; \
> > +    av_assert0(aligned_w == (int32_t)aligned_w);\
> > +    av_assert0(aligned_h == (int32_t)aligned_h);\
> 
> Ok with me.

will apply

thx

[...]
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Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

It is dangerous to be right in matters on which the established authorities
are wrong. -- Voltaire

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