Opened 5 years ago
Closed 3 years ago
#8170 closed defect (worksforme)
Division by zero at libavutil/rational.h:105
Reported by: | Suhwan | Owned by: | |
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Priority: | normal | Component: | undetermined |
Version: | git-master | Keywords: | ubsan |
Cc: | Blocked By: | ||
Blocking: | Reproduced by developer: | no | |
Analyzed by developer: | no |
Description
Summary of the bug:
There is division by zero at libavutil/rational.h:105
How to reproduce:
% ./ffmpeg_g -t 2 -stream_loop 23 -y -r 96 -i c-m2-a46ce91d8975a017917156b8824f936e.png -loglevel 99 -map 0 -c copy -vframes 4 -aframes 86 -ab 516k -ac 4 -b:v 599k tmp.avi ffmpeg version N-94957-g65589ad553 Copyright (c) 2000-2019 the FFmpeg developers built with clang version 6.0.0-1ubuntu2 (tags/RELEASE_600/final) configuration: --cc=clang --cxx=clang++ --ld=clang --enable-debug --toolchain=clang-usan
Attachments (2)
Change History (3)
by , 5 years ago
Attachment: | gdb-rational added |
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by , 5 years ago
Attachment: | c-m2-a46ce91d8975a017917156b8824f936e.png added |
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comment:1 by , 3 years ago
Resolution: | → worksforme |
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Status: | new → closed |
Not reproducable with git master
also these floating point division by 0 bugs are very borderline in how far they represent bugs. IEEE 754 defines the result of such operations.
None the less if it would reproduce i would try to avoid the operation but as theres no such operation occuring anymore ...
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