[FFmpeg-devel] [PATCH 00/22] Deprecate av_uninit

Zhao Zhili quinkblack at foxmail.com
Fri Apr 11 10:55:45 EEST 2025


From: Zhao Zhili <zhilizhao at tencent.com>

The macro is meant to suppress false uninitialized warnings. However,
sometimes these 'false uninitialized warnings' are really undefined
behavior, and leading to real issue like crash, e.g., ab792634197e.

For false uninitialized warnings, it can be silenced by initialization,
and compiler can easily optimize away unnecessary initializations.

av_uninit shouldn't be used in any case.

Zhao Zhili (22):
  avfilter/af_aecho: Remove use of av_uninit
  avfilter/af_compand: Remove use of av_uninit
  avfilter/vsrc_mandelbrot: Remove use of av_uninit
  avformat/electronicarts: Remove use of av_uninit
  swscale/yuv2rgb: Remove use of av_uninit
  avcodec/ac3enc: Remove use of av_uninit
  avcodec/bfi: Remove use of av_uninit
  avcodec/dvdsubenc: Remove use of av_uninit
  avcodec/eamad: Remove use of av_uninit
  avcodec/ffv1enc: Remove use of av_uninit
  avcodec/flacdec: Remove use of av_uninit
  avcodec/lpc: Remove use of av_uninit
  avcodec/mpeg4videodec: Remove use av_uninit
  avcodec/qtrleenc: Remove use of av_uninit
  avcodec/ra144enc: Remove use av_uninit
  avcodec/vp8: Remove use of av_uninit
  avcodec/wmavoice: Remove use of av_uninit
  avformat/flvdec: Remove use of av_uninit
  avformat/srtp: Remove use of av_uninit
  avformat/wavdec: Remove use of av_uninit
  avformat/tests/seek: Remove use of av_uninit
  avutil/attributes: Make av_uninit do nothing

 libavcodec/ac3enc.c           |  5 +++--
 libavcodec/ac3enc_template.c  | 16 ++++++++--------
 libavcodec/bfi.c              |  2 +-
 libavcodec/dvdsubenc.c        |  2 +-
 libavcodec/eamad.c            |  2 +-
 libavcodec/ffv1enc.c          |  4 ++--
 libavcodec/ffv1enc_template.c |  4 ++--
 libavcodec/flacdec.c          |  2 +-
 libavcodec/lpc.c              |  2 +-
 libavcodec/mpeg4videodec.c    |  2 +-
 libavcodec/qtrleenc.c         |  2 +-
 libavcodec/ra144enc.c         |  4 ++--
 libavcodec/vp8.c              |  2 +-
 libavcodec/wmavoice.c         |  4 ++--
 libavfilter/af_aecho.c        |  2 +-
 libavfilter/af_compand.c      |  2 +-
 libavfilter/vsrc_mandelbrot.c |  2 +-
 libavformat/electronicarts.c  |  2 +-
 libavformat/flvdec.c          |  4 ++--
 libavformat/srtp.c            |  4 ++--
 libavformat/tests/seek.c      |  2 +-
 libavformat/wavdec.c          |  2 +-
 libavutil/attributes.h        |  9 ++++-----
 libswscale/yuv2rgb.c          |  2 +-
 24 files changed, 42 insertions(+), 42 deletions(-)

-- 
2.46.0



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