From: Michael Niedermayer <michael@niedermayer.cc>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Subject: Re: [FFmpeg-devel] [PATCHv4] swscale: prevent undefined behaviour in the PUTRGBA macro
Date: Wed, 10 Jul 2024 18:09:36 +0200
Message-ID: <20240710160936.GI4991@pb2> (raw)
In-Reply-To: <20240709214132.12016-1-gseanmcg@gmail.com>
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On Tue, Jul 09, 2024 at 05:41:32PM -0400, Sean McGovern wrote:
> For even small values of 'asrc[x]', shifting them by 24 bits or more
> will cause arithmetic overflow and be caught by
> GCC's undefined behaviour sanitizer.
>
> Ensure the values do not overflow by up-casting the bracketed
> expressions involving 'asrc' to uint32_t.
> ---
> libswscale/yuv2rgb.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
will apply
thx
[...]
--
Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
You can kill me, but you cannot change the truth.
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prev parent reply other threads:[~2024-07-10 16:09 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-07-03 19:07 [FFmpeg-devel] [RFC] fix UB in fate-checkasm-sw_yuv2rgb Sean McGovern
2024-07-03 20:33 ` Rémi Denis-Courmont
2024-07-03 21:32 ` Sean McGovern
2024-07-08 4:25 ` [FFmpeg-devel] [PATCHv2] swscale: prevent undefined behaviour in the PUTRGBA macro Sean McGovern
2024-07-09 12:44 ` Michael Niedermayer
2024-07-09 18:34 ` [FFmpeg-devel] [PATCHv3] " Sean McGovern
2024-07-09 20:19 ` Leo Izen
2024-07-09 21:41 ` [FFmpeg-devel] [PATCHv4] " Sean McGovern
2024-07-10 16:09 ` Michael Niedermayer [this message]
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