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Date: Wed, 2 Apr 2025 23:17:31 +0200
From: Michael Niedermayer <michael@niedermayer.cc>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Message-ID: <20250402211731.GI4991@pb2>
References: <20250402000358.483296-1-michael@niedermayer.cc>
<97e8989-b5d4-df35-d1d2-703d2fd2b12a@martin.st>
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Subject: Re: [FFmpeg-devel] [PATCH] tests/checkasm/checkasm.c: Assert that
aligned_w/h do not overflow
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Hi Martin
On Wed, Apr 02, 2025 at 10:42:59AM +0300, Martin Storsj=F6 wrote:
> On Wed, 2 Apr 2025, Michael Niedermayer wrote:
>=20
> > Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
> > ---
> > tests/checkasm/checkasm.c | 7 +++++--
> > 1 file changed, 5 insertions(+), 2 deletions(-)
> >=20
> > 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 =3D (w + align_w - 1) & ~(align_w - 1); \
> > - int aligned_h =3D (h + align_h - 1) & ~(align_h - 1); \
> > + int64_t aligned_w =3D (w - 1LL + align_w) & ~(align_w - 1); \
> > + int64_t aligned_h =3D (h - 1LL + align_h) & ~(align_h - 1); \
> > int err =3D 0; \
> > int y =3D 0; \
> > + av_assert0(aligned_w =3D=3D (int32_t)aligned_w);\
> > + av_assert0(aligned_h =3D=3D (int32_t)aligned_h);\
>=20
> Ok with me.
will apply
thx
[...]
--=20
Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
It is dangerous to be right in matters on which the established authorities
are wrong. -- Voltaire
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