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avformat/avidec: Fix integer overflow iff ULONG_MAX < INT64_MAX

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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@gmail.com>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2024-03-12 23:23:17 +01:00
parent a327434df7
commit 7a089ed8e0
1 changed files with 1 additions and 1 deletions
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2
libavformat/avidec.c
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@ -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;