[igraph] segfault in self-test

[Neal Becker]

I maintain igraph (and python-igraph) on Fedora.  python-igraph is now failing 
on (bleeding edge) rawhide builds.  The report is here:

https://bugzilla.redhat.com/attachment.cgi?id=383932

failure is:
testAuthorityScore (igraph.test.structural.CentralityTests) ... /var/tmp/rpm-
tmp.tE6lTM: line 30: 22398 Segmentation fault      (core dumped) 
PYTHONPATH=$RPM_BUILD_ROOT/usr/lib64/python2.6/site-packages /usr/bin/python -
c 'import igraph.test; igraph.test.test();'

The build target was x86_64.  igraph is 0.5.2.

I have no idea what might have changed in the enviroment that is causing this, 
perhaps a newer gcc?

I have no direct access to a system configured in this way, these builds are 
done remotely on systems I have no direct access to.

I wonder if anyone has seen a problem like this?