From: James Almer <jamrial-at-gmail.com@ffmpeg.org>
To: ffmpeg-devel@ffmpeg.org
Subject: [FFmpeg-devel] [PATCH v2 2/2] avcodec/mss2dsp: use FF_PTR_ADD to add offsets to a pointer
Date: Sun, 22 Jun 2025 10:54:40 -0300
Message-ID: <20250622135440.1287-1-jamrial@gmail.com> (raw)
In-Reply-To: <20250622135208.1229-1-jamrial@gmail.com>
Fixes: libavcodec/mss2dsp.c:59:14: runtime error: applying zero offset to null pointer
Signed-off-by: James Almer <jamrial@gmail.com>
---
Untested, as gcc-usan on Linux x86_64 doesn't complain about it, but it can be seen in
https://fate.ffmpeg.org/report.cgi?time=20250622122557&slot=amd64-clang-cl-msvc-asan
libavcodec/mss2dsp.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavcodec/mss2dsp.c b/libavcodec/mss2dsp.c
index cc39dd637f..ace92ef9c7 100644
--- a/libavcodec/mss2dsp.c
+++ b/libavcodec/mss2dsp.c
@@ -56,7 +56,7 @@ static av_always_inline void mss2_blit_wmv9_template(uint8_t *dst,
}
}
}
- mask += mask_stride;
+ mask = FF_PTR_ADD(mask, mask_stride);
dst += dst_stride;
srcy += srcy_stride;
srcu += srcuv_stride * (r & 1);
--
2.50.0
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next prev parent reply other threads:[~2025-06-22 13:54 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-22 13:49 [FFmpeg-devel] [PATCH] avcodec/ffv1enc_template: " James Almer
2025-06-22 13:52 ` [FFmpeg-devel] [PATCH 2/2] avcodec/mss2dsp: " James Almer
2025-06-22 13:54 ` James Almer [this message]
2025-06-22 14:57 ` [FFmpeg-devel] [PATCH v2 " Kacper Michajlow
2025-06-22 14:50 ` [FFmpeg-devel] [PATCH] avcodec/ffv1enc_template: " Kacper Michajlow
2025-06-22 14:55 ` Kacper Michajlow
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