CI test failures on xenial amd64 due to valgrind errors following system upgrade to ld-2.23

[Alexandros Frantzis]

We started seeing failures in all our xenial amd64 CI jobs after an upgrade to ld-2.23. The error causing valgrind to fail is:

06:50:15 11: ==4076== Conditional jump or move depends on uninitialised value(s)
06:50:15 11: ==4076== at 0x401B8E8: index (in /lib/x86_64-linux-gnu/ld-2.23.so)
06:50:15 11: ==4076== by 0x4007BDC: fillin_rpath (in /lib/x86_64-linux-gnu/ld-2.23.so)
06:50:15 11: ==4076== by 0x4008609: _dl_init_paths (in /lib/x86_64-linux-gnu/ld-2.23.so)
06:50:15 11: ==4076== by 0x40032F7: dl_main (in /lib/x86_64-linux-gnu/ld-2.23.so)
06:50:15 11: ==4076== by 0x4019521: _dl_sysdep_start (in /lib/x86_64-linux-gnu/ld-2.23.so)
06:50:15 11: ==4076== by 0x4004E79: _dl_start (in /lib/x86_64-linux-gnu/ld-2.23.so)
06:50:15 11: ==4076== by 0x4000CC7: ??? (in /lib/x86_64-linux-gnu/ld-2.23.so)
06:50:15 11: ==4076== by 0x1: ???
06:50:15 11: ==4076== by 0xFFF00038A: ???
06:50:15 11: ==4076== by 0xFFF0003EA: ???

Examples:
https://mir-jenkins.ubuntu.com/job/build-2-binpkg-mir/arch=amd64,compiler=gcc,platform=mesa,release=xenial/561/
https://mir-jenkins.ubuntu.com/job/build-2-binpkg-mir/arch=amd64,compiler=gcc,platform=mesa,release=xenial/562/
...

[Mir CI Bot (mir-ci-bot)]

Fix committed into lp:mir at revision None, scheduled for release in mir, milestone 0.22.0

[Launchpad Janitor (janitor)]

This bug was fixed in the package mir - 0.22.1+16.04.20160516.2-0ubuntu2

---------------
mir (0.22.1+16.04.20160516.2-0ubuntu2) yakkety; urgency=medium

  [ Dimitri John Ledkov ]
  * Fix FTBFS error: call of overloaded ‘abs(float)’ is ambiguous, by
    including cmath c++ header.

 -- Łukasz 'sil2100' Zemczak <email address hidden> Thu, 19 May 2016 21:58:43 +0200