[FFmpeg-devel] [PATCH 2/2] avcodec/mss2dsp: use FF_PTR_ADD to add offsets to a pointer

[James Almer]

Fixes: libavcodec/mss2dsp.c:59:14: runtime error: applying zero offset to null pointer

Signed-off-by: James Almer <jamrial at 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..4180c65577 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;
+        FF_PTR_ADD(mask, mask_stride);
         dst  +=   dst_stride;
         srcy +=  srcy_stride;
         srcu += srcuv_stride * (r & 1);
-- 
2.50.0