[FFmpeg-trac] #8093(undetermined:new): Uninitialized use in ffmpeg

[FFmpeg]

#8093: Uninitialized use in ffmpeg
-------------------------------------+-------------------------------------
             Reporter:  bwang        |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:
  undetermined                       |  unspecified
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 This bug is found in git commit 434588596fef6bd2cef17f8c9c2979a010153edd.

 To trigger the bug:
 valgrind ./ffmpeg -threads 1 -i test-input -f null /dev/null

 Part of the Valgrind output:
 ==11496==
 ==11496== Conditional jump or move depends on uninitialised value(s)
 ==11496==    at 0xCB9804: ??? (in /home/bwang/Bowen/gitrepo/aflpp-
 target/ffmpeg/ffmpeg-vanilla/ffmpeg)
 ==11496==    by 0x6B141F: ??? (in /home/bwang/Bowen/gitrepo/aflpp-
 target/ffmpeg/ffmpeg-vanilla/ffmpeg)
 ==11496==    by 0x5FF30F: ??? (in /home/bwang/Bowen/gitrepo/aflpp-
 target/ffmpeg/ffmpeg-vanilla/ffmpeg)
 ==11496==    by 0x60001F: ??? (in /home/bwang/Bowen/gitrepo/aflpp-
 target/ffmpeg/ffmpeg-vanilla/ffmpeg)
 ==11496==    by 0x5616B2: ??? (in /home/bwang/Bowen/gitrepo/aflpp-
 target/ffmpeg/ffmpeg-vanilla/ffmpeg)
 ==11496==    by 0x569744: ??? (in /home/bwang/Bowen/gitrepo/aflpp-
 target/ffmpeg/ffmpeg-vanilla/ffmpeg)
 ==11496==    by 0x275BE7: ??? (in /home/bwang/Bowen/gitrepo/aflpp-
 target/ffmpeg/ffmpeg-vanilla/ffmpeg)
 ==11496==    by 0x277682: ??? (in /home/bwang/Bowen/gitrepo/aflpp-
 target/ffmpeg/ffmpeg-vanilla/ffmpeg)
 ==11496==    by 0x26FC91: main (in /home/bwang/Bowen/gitrepo/aflpp-
 target/ffmpeg/ffmpeg-vanilla/ffmpeg)
 ==11496==
 ==11496== Conditional jump or move depends on uninitialised value(s)
 ==11496==    at 0xCB98CA: ??? (in /home/bwang/Bowen/gitrepo/aflpp-
 target/ffmpeg/ffmpeg-vanilla/ffmpeg)
 ==11496==    by 0x6B141F: ??? (in /home/bwang/Bowen/gitrepo/aflpp-
 target/ffmpeg/ffmpeg-vanilla/ffmpeg)
 ==11496==    by 0x5FF30F: ??? (in /home/bwang/Bowen/gitrepo/aflpp-
 target/ffmpeg/ffmpeg-vanilla/ffmpeg)
 ==11496==    by 0x60001F: ??? (in /home/bwang/Bowen/gitrepo/aflpp-
 target/ffmpeg/ffmpeg-vanilla/ffmpeg)
 ==11496==    by 0x5616B2: ??? (in /home/bwang/Bowen/gitrepo/aflpp-
 target/ffmpeg/ffmpeg-vanilla/ffmpeg)
 ==11496==    by 0x569744: ??? (in /home/bwang/Bowen/gitrepo/aflpp-
 target/ffmpeg/ffmpeg-vanilla/ffmpeg)
 ==11496==    by 0x275BE7: ??? (in /home/bwang/Bowen/gitrepo/aflpp-
 target/ffmpeg/ffmpeg-vanilla/ffmpeg)
 ==11496==    by 0x277682: ??? (in /home/bwang/Bowen/gitrepo/aflpp-
 target/ffmpeg/ffmpeg-vanilla/ffmpeg)
 ==11496==    by 0x26FC91: main (in /home/bwang/Bowen/gitrepo/aflpp-
 target/ffmpeg/ffmpeg-vanilla/ffmpeg)
 ==11496==

 ==11496==
 ==11496== HEAP SUMMARY:
 ==11496==     in use at exit: 0 bytes in 0 blocks
 ==11496==   total heap usage: 2,195 allocs, 2,195 frees, 1,924,470 bytes
 allocated
 ==11496==
 ==11496== All heap blocks were freed -- no leaks are possible
 ==11496==
 ==11496== For counts of detected and suppressed errors, rerun with: -v
 ==11496== Use --track-origins=yes to see where uninitialised values come
 from
 ==11496== ERROR SUMMARY: 4352 errors from 32 contexts (suppressed: 0 from
 0)

--
Ticket URL: <https://trac.ffmpeg.org/ticket/8093>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker