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

[Andreas Rheinhardt]

ffmpeg | branch: master | Andreas Rheinhardt <andreas.rheinhardt at outlook.com> | Tue Mar 12 23:23:17 2024 +0100| [7a089ed8e049e3bfcb22de1250b86f2106060857] | committer: Andreas Rheinhardt

avformat/avidec: Fix integer overflow iff ULONG_MAX < INT64_MAX

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

Reviewed-by: James Almer <jamrial at gmail.com>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt at outlook.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=7a089ed8e049e3bfcb22de1250b86f2106060857
---

 libavformat/avidec.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavformat/avidec.c b/libavformat/avidec.c
index f3183b2698..985a9bf022 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 + 1ULL) {
         int64_t max_dts = INT64_MIN / 2;
         int64_t min_dts = INT64_MAX / 2;
         int64_t max_buffer = 0;