Could thread-local storage be broken in Rawhide aarch64?

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Don't install systemd-227-1.fc24 on aarch64 systems.  It crashes when
it starts up:

  https://bugzilla.redhat.com/show_bug.cgi?id=1271387

Investigating this bug, it looks as if it crashes when it reads a
static '_Thread_local' variable.

So this might indicate some sort of gcc / toolchain issue in aarch64.
FWIW the broken version of systemd was compiled with:

  gcc 5.1.1-4.fc23
  binutils 0:2.25.1-7.fc24

gcc is older than the latest version in arm.koji.

I tried experimenting with writing a simple TLS program, but didn't
manage to reproduce the problem so far.

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
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