[FFmpeg-trac] #6136(build system:new): Gentoo QA warnings on 3.2.4 and 7b3f0b3de4e01778e419140d4c57f2eb798ae954 (HEAD)

[FFmpeg]

#6136: Gentoo QA warnings on 3.2.4 and 7b3f0b3de4e01778e419140d4c57f2eb798ae954
(HEAD)
-------------------------------------+-------------------------------------
             Reporter:  sroracle     |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:  build        |                  Version:  git-
  system                             |  master
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug: Gentoo ebuild issues QA warnings on building ffmpeg
 for both release 3.2.4 and latest commit
 7b3f0b3de4e01778e419140d4c57f2eb798ae954


 The message itself:
 {{{
  * QA Notice: Package triggers severe warnings which indicate that it
  *            may exhibit random runtime failures.
  * src/libavcodec/vaapi_encode_h265.c:305:49: warning: array subscript is
 above array bounds [-Warray-bounds]
  * src/libswresample/rematrix.c:376:47: warning: iteration 64u invokes
 undefined behavior [-Waggressive-loop-optimizations]
 }}}

 GCC info:
 {{{
 Using built-in specs.
 COLLECT_GCC=/usr/x86_64-pc-linux-gnu/gcc-bin/4.9.4/gcc
 COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-pc-linux-gnu/4.9.4/lto-wrapper
 Target: x86_64-pc-linux-gnu
 Configured with: /var/tmp/portage/sys-
 devel/gcc-4.9.4/work/gcc-4.9.4/configure
 --host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --prefix=/usr
 --bindir=/usr/x86_64-pc-linux-g nu/gcc-bin/4.9.4
 --includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.4/include
 --datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.9.4
 --mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.9.4/man
 --infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.9.4/info
 --with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-
 gnu/4.9.4/include/g++-v4
 --with-python-dir=/share/gcc-data/x86_64-pc-linux-gnu/4.9.4/python
 --enable-languages=c,c++,fortran --enable-obsolete --enable-secureplt
 --disable-werror --with-system-zlib --enable-nls --without-included-
 gettext
 --enable-checking=release --with-bugurl=https://bugs.gentoo.org/
 --with-pkgversion='Gentoo 4.9.4 p1.0, pie-0.6.4' --enable-libstdcxx-time
 --enable-shared --enable-threads=posix --enable-__cxa_atexit
 --enable-clocale=gnu --enable-multilib --with-multilib-list=m32,m64
 --disable-altivec --disable-fixed-point --enable-targets=all --disable-
 libgcj
 --enable-libgomp --disable-libmudflap --disable-libssp --disable-
 libcilkrts
 --enable-vtable-verify --enable-libvtv --enable-lto --without-cloog
 --enable-libsanitizer
 Thread model: posix
 gcc version 4.9.4 (Gentoo 4.9.4 p1.0, pie-0.6.4)
 }}}

 ffmpeg info:
 {{{
 ffmpeg version N-83474-g7b3f0b3de4 Copyright (c) 2000-2017 the FFmpeg
 developers
 built with gcc 4.9.4 (Gentoo 4.9.4 p1.0, pie-0.6.4)
 configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64
 --docdir=/usr/share/doc/ffmpeg-9999/html --mandir=/usr/share/man --enable-
 shared
 --cc=x86_64-pc-linux-gnu-gc c --cxx=x86_64-pc-linux-gnu-g++
 --ar=x86_64-pc-linux-gnu-ar --optflags='-march=native -O2 -pipe'
 --disable-static --enable-avfilter --enable-avresample --disable-stripping
 --enable-nonfree --disable-indev=v4l2 --disable-outdev=v4l2 --disable-
 indev=oss
 --disable-indev=jack --disable-outdev=oss --enable-bzlib
 --disable-runtime-cpudetect --disable-debug --disable-gcrypt --enable-
 gnutls
 --disable-gmp --enable-gpl --enable-hardcoded-tables --enable-iconv
 --disable-lzma --enable-network --enable-openssl --enable-postproc
 --disable-libsmbclient --enable-ffplay --enable-sdl2 --enable-vaapi
 --enable-vdpau --enable-xlib --enable-libxcb --enable-libxcb-shm
 --enable-libxcb-xfixes --enable-zlib --enable-libcdio --disable-
 libiec61883
 --disable-libdc1394 --disable-libcaca --disable-openal --enable-opengl
 --disable-libv4l2 --enable-libpulse --disable-libopencore-amrwb
 --disable-libopencore-amrnb --disable-libfdk-aac --disable-libopenjpeg
 --disable-libbluray --disable-libcelt --disable-libgme --disable-libgsm
 --disable-mmal --disable-libmodplug --enable-libopus --disable-libilbc
 --disable-librtmp --disable-libssh --disable-libschroedinger --disable-
 libspeex
 --enable-libvorbis --disable-libvpx --disable-libzvbi --disable-libbs2b
 --disable-chromaprint --disable-libflite --disable-frei0r --disable-
 libfribidi
 --disable-fontconfig --disable-ladspa --enable-libass --enable-libfreetype
 --disable-librubberband --disable-netcdf --disable-libzimg --disable-
 libsoxr
 --enable-pthreads --disable-libvo-amrwbenc --enable-libmp3lame
 --disable-libkvazaar --disable-nvenc --disable-libopenh264 --disable-
 libsnappy
 --enable-libtheora --disable-libtwolame --disable-libwavpack --enable-
 libwebp
 --enable-libx264 --disable-libx265 --enable-libxvid --disable-amd3dnow
 --disable-amd3dnowext --disable-fma4 --disable-xop --cpu=host --disable-
 doc
 --disable-htmlpages --enable-manpages
 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/6136>
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