[FFmpeg-trac] #11332(avformat:new): ffio_open_whitelist leaks memory

[FFmpeg]

#11332: ffio_open_whitelist leaks memory
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             Reporter:  oarfish   |                     Type:  defect
               Status:  new       |                 Priority:  normal
            Component:  avformat  |                  Version:  7.1
             Keywords:  leak      |               Blocked By:
             Blocking:            |  Reproduced by developer:  0
Analyzed by developer:  0         |
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 I suspect that ffio_open_whitelist is leaking an URLContext.

 In this line, a context is declared
 https://github.com/FFmpeg/FFmpeg/blob/7c1e732ad2e240af5afe9ffea443c91bb233aa65/libavformat/avio.c#L475

 and then allocated by ffurl_open_whitelist at
 https://github.com/FFmpeg/FFmpeg/blob/7c1e732ad2e240af5afe9ffea443c91bb233aa65/libavformat/avio.c#L480C11-L480C31

 However, I don't see it being freed anywhere. In my program, this causes
 the leak sanitizer to report a leak:


 {{{
 Indirect leak of 234 byte(s) in 1 object(s) allocated from:
     #0 0x7faaaa89565f in __interceptor_posix_memalign
 ../../../../src/libsanitizer/lsan/lsan_interceptors.cpp:110
     #1 0x557e4562f3df in av_malloc libavutil/mem.c:107
     #2 0x557e4562f7f3 in av_mallocz libavutil/mem.c:258
     #3 0x557e458b85d0 in url_alloc_for_protocol libavformat/avio.c:139
     #4 0x557e458b9271 in ffurl_alloc libavformat/avio.c:356
     #5 0x557e458b92e6 in ffurl_open_whitelist libavformat/avio.c:369
     #6 0x557e458b988c in ffio_open_whitelist libavformat/avio.c:480
     #7 0x557e4588b767 in io_open_default libavformat/options.c:153
     #8 0x557e45875a27 in init_input libavformat/demux.c:178
     #9 0x557e45875d35 in avformat_open_input libavformat/demux.c:248
 }}}


 I did not manage to reproduce this repro this yet in a minimal executable,
 will update once i can.
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Ticket URL: <https://trac.ffmpeg.org/ticket/11332>
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