[FFmpeg-devel] [PATCH] avformat/avidec: Fix integer overflow iff ULONG_MAX < INT64_MAX

[Andreas Rheinhardt]

Affects many FATE-tests, see
http://fate.ffmpeg.org/report.cgi?time=20240312011016&slot=ppc-linux-gcc-13.2-ubsan-altivec-qemu

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt at outlook.com>
---
 libavformat/avidec.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavformat/avidec.c b/libavformat/avidec.c
index f3183b2698..b7cbf148af 100644
--- a/libavformat/avidec.c
+++ b/libavformat/avidec.c
@@ -1696,7 +1696,7 @@ static int check_stream_max_drift(AVFormatContext *s)
     int *idx = av_calloc(s->nb_streams, sizeof(*idx));
     if (!idx)
         return AVERROR(ENOMEM);
-    for (min_pos = pos = 0; min_pos != INT64_MAX; pos = min_pos + 1LU) {
+    for (min_pos = pos = 0; min_pos != INT64_MAX; pos = min_pos + (uint64_t)1) {
         int64_t max_dts = INT64_MIN / 2;
         int64_t min_dts = INT64_MAX / 2;
         int64_t max_buffer = 0;
-- 
2.40.1