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  1. media-libs/alsa-lib-
    1. Issue: Pulseaudio-4.0 trigger in alsa-lib function snd_pcm_area_silence which fails when is alsa-lib compiled with CFLAGS="-ftree-vectorize" (equals to -O3)}} bug #51060
      Solution: Fixed gcc or/and alsa-lib.
      Workaround: CFLAGS="-fno-tree-vectorize" emerge -v1 alsa-lib
#0  0x00007fffed8bc6e3 in snd_pcm_area_silence (dst_area=dst_area@entry=0x7fffed05ec80, dst_offset=dst_offset@entry=16642, samples=2, samples@entry=16126, format=format@entry=SND_PCM_FORMAT_S16_LE) at /var/tmp/portage/media-libs/alsa-lib-
#1  0x00007fffed8bcab9 in snd_pcm_areas_silence (dst_areas=0x697510, dst_areas@entry=0x6974f0, dst_offset=dst_offset@entry=8321, channels=2, frames=frames@entry=8063, format=SND_PCM_FORMAT_S16_LE) at /var/tmp/portage/media-libs/alsa-lib-
#2  0x00007fffed906a8b in softvol_convert_stereo_vol (frames=8063, channels=<optimized out>, src_offset=8321, src_areas=0x6974f0, dst_offset=8321, dst_areas=0x6974f0, svol=0x66b3b0) at /var/tmp/portage/media-libs/alsa-lib-
#3  snd_pcm_softvol_write_areas (pcm=0x6890f0, areas=0x6974f0, offset=8321, size=8063, slave_areas=0x6974f0, slave_offset=8321, slave_sizep=0x7fffed05edb8) at /var/tmp/portage/media-libs/alsa-lib-
#4  0x00007fffed8d105f in snd_pcm_plugin_mmap_commit (pcm=0x6890f0, offset=<optimized out>, size=8063) at /var/tmp/portage/media-libs/alsa-lib-
#5  0x00007fffedb8cc34 in ?? () from /usr/lib64/pulse-4.0/modules/
#6  0x00007ffff76c2897 in ?? () from /usr/lib64/pulseaudio/
#7  0x00007ffff6e022d3 in start_thread () from /lib64/
#8  0x00007ffff693424d in clone () from /lib64/
  1. media-libs/mesa-9999
    1. Issue: Weston render incorrectly. When is gallium-egl disabled, DRI2 take care of it. Without gallium-egl can't be used openvg.
      Workaround: --disable-gallium-egl
      Solution: Fixed gallium-egl backend.
      broken since "e64633e8c3a5498998a45ab721bf80edca101cf5 r600g,radeonsi: share r600_texture.c"
    2. Issue: Fail compile with llvm > 3.3
      Workaround: "--disable-terminfo --disable-ncurses" or/and "--with-llvm-shared-libs"
      Solution: Unknown.
    3. Issue: gallium-nine d3d state tracker not initialize correctly with CFLAGS="-ftree-vectorize" (equals to -O3)
      Workaround: CFLAGS="-fno-tree-vectorize" emerge -v1 mesa
      TODO: Check if is this caused by -ftree-vectorize
    4. Issue: gallium-nine branch in my git repo has some code different from upstream
      Workaround: use upstream for OpenCL work correctly
      TODO: Make diff, check code, gallium nine as patch.
  2. >=dev-libs/weston-1.3.0
    Issue: buildsystem fails on tests with undefined reference on lot places
    Workaround: it works when it's compiled outside portage
    Solution: fix autotools?
  3. MultiPath TCP
    Issue: Maintain patchset a top of 3.12.
  4. Qt5
    Issue: GLES2 support (only in qtgui), but opengl detect gles and qtwebkit fails compile with that setting (for now completly ignoring missing #define OPENGLES2)
    Workaround: disable gles2
    Issue: Get qt5 support into official portage.
    1. wireshark-1.11.0
      Workaround: iXit overlay.