Since glibc 2.26, struct ucontext no longer exists but is wrapped in a
typedef ucontext_t.
This is basically a backport of the patch to gcc version 4.5 which was
introduced by @vcunat in f04b64c1e9.
Building against x86_64-linux and i686-linux now succeeds.
Signed-off-by: aszlig <aszlig@nix.build>
Cc: @abbradar
Update to the latest version (note versioning change).
From the changelog for 'mediainfo' (libzen changelog is unavailable):
===
Version 17.10, 2017-11-02
--------------
+ We need your support! Visit https://mediaarea.net/SupportUs
+ Version scheme is now YY.MM (year dot month, 2 digits each)
+ New MediaInfo XML output, with XSD, more suitable for automatic
parsing. Use Option("Inform", "OLDXML") for keeping previous behavior
+ New "Info_OutputFormats" option for listing supported output formats
+ Universal Ad ID: refactored display, better display of value and
registry, XML name slightly modified
+ MOV: support of HDR metadata (MasteringDisplayColorVolume, MaxCLL,
MaxFALL)
+ BWF: display of UMID and loudness info
+ AAC: show program_config_element in trace
+ MPEG Audio: frame rate info
+ PCM in WAV and Matroska: Support of ValidBitsPerSample
+ I197, EBUCore: 1.8 output uses now final version of XSD and final XSD
location
+ Matroska: tweaking frame rate empirical detection for some corner
cases
x I1070, LAME 3.100 info tag was incorrectly parsed
x B1068, MPEG Audio: Incoherent duration between General and Audio
parts, Audio part duration fixed
x Matroska: showing "A_MS/ACM" Matroska CodecID
x MXF: Fix crash with some buggy files
x MXF: was not well supporting MXF referencing only 1 file
x PCM in WAV: 8-bit content is unsigned and without endianess
x PCM in WAV and Matroska: More coherency between Wave info and
ExtensibleWave Info (bitdepth, sign)
x WAV: GUID display was with first 8 bytes in wrong order
x Several crash fixes
Main change: glibc: 2.25-x -> 2.26-y, containing security fixes,
and various features and deprecations. Unfortunately, some of the
latter still cause (transitively) a couple hundred newly failing jobs.
I'm not delaying anymore, so that we have the security fix on master.
I mainly patched gcc, llvm and icu, but I can't fix everything...
Security: the NEWS claims a couple more CVEs are fixed than what we
patched, though perhaps nothing critical.
I personally don't find DNS fragmentation attacks that interesting
anymore, as it's just about weaker improvements for cases that choose
not to use DNSSEC.
Largest expected caveat: upstream bumped the minimal supportable kernel
to 3.2.0. That's the oldest kernel still supported upstream, released
in Jan 2012, but most notably RHEL 6 and derivates still use a heavily
patched 2.6.32 kernel and those systems are still supported and in use
(production support is scheduled to last till the end of 2020!).
