[FFmpeg-devel] [PATCH] avcodec/h264_parse: Use 64bit for expectedpoc

[Michael Niedermayer]

Fixes: signed integer overflow: -2142516591 + -267814575 cannot be represented in type 'int'
Fixes: 14450/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_H264_fuzzer-5716105319940096

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
---
 libavcodec/h264_parse.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libavcodec/h264_parse.c b/libavcodec/h264_parse.c
index a075443d17..cc72a1b263 100644
--- a/libavcodec/h264_parse.c
+++ b/libavcodec/h264_parse.c
@@ -301,7 +301,8 @@ int ff_h264_init_poc(int pic_field_poc[2], int *pic_poc,
         if (picture_structure == PICT_FRAME)
             field_poc[1] += pc->delta_poc_bottom;
     } else if (sps->poc_type == 1) {
-        int abs_frame_num, expected_delta_per_poc_cycle, expectedpoc;
+        int abs_frame_num, expected_delta_per_poc_cycle;
+        int64_t expectedpoc;
         int i;
 
         if (sps->poc_cycle_length != 0)
-- 
2.21.0