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[Anders Kaseorg <andersk@xxxxxxx>]

Sorry, I read the build log incorrectly in comment #3. krb5 in utopic
amd64 was actually compiled against gcc-4.8 4.8.3-4ubuntu2. So the
belief may still be valid.

(I was misled because the metapackage gcc 4:4.9.0-3ubuntu5 actually
installed a symlink to gcc-4.8, despite the version number.)

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https://bugs.launchpad.net/bugs/1347147

Title:
  krb5 database propagation enters infinite loop

Status in “krb5” package in Ubuntu:
  Confirmed

Bug description:
  In some conditions, propagating a kerberos database to a slave KDC server can stall.
  This is due to a misoptimization by gcc 4.8 of the CIRCLEQ famliy of macros, apparently due to overzealous strict aliasing deductions.

  One case of this stall is reported at
  http://mailman.mit.edu/pipermail/kerberos/2014-July/020007.html (and
  the rest of the thread), and there is an entry in the upstream
  bugtracker at http://krbdev.mit.edu/rt/Ticket/Display.html?id=7860 .

  gcc 4.9 (as used in Debian unstable at present) is not believed to
  induce this problem.  Upstream has patched their code to use the TAILQ
  family of macros instead, as a workaround, but that workaround has not
  yet appeared in an upstream release:
  https://github.com/krb5/krb5/commit/26d8744129

  Because of the different compiler versions used on Debian and Ubuntu,
  I am filing this as an Ubuntu-specific bug.

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