Crash with MPI version

[bqminh]

Reported by Remi Denise

https://groups.google.com/forum/#!topic/iqtree/ux9bvgnNBCk

I launch IQtree 1.5.4 on the cluster of my institute and sometime it crashed with a segmentation fault during the optimizing step.

I launch with the command line :

iqtree-mpi -s FirmicutesSmall.aa.grp.aln -st AA -pre FirmicutesSmall.aa.grp -bb 1000 -wbtl -nm 6000 -m LG+R10

And I backtrack the error from the core file :

#0 0x00000000004e2d54 in errstreambuf::overflow(int) ()
#1 0x00007f8cdf8c048a in std::basic_streambuf<char, std::char_traits >::sputc (__c=10 '\n', this=) at /tmp/build/x86_64-unknown-linux-gnu/libstdc++-v3/include/streambuf:434
#2 std::ostream::put (this=this@entry=0xa44c00 std::cerr, __c=) at /tmp/build/x86_64-unknown-linux-gnu/libstdc++-v3/include/bits/ostream.tcc:163
#3 0x00007f8cdf8c06bf in std::endl<char, std::char_traits > (__os=...) at /tmp/build/x86_64-unknown-linux-gnu/libstdc++-v3/include/ostream:565
#4 0x00000000004e3771 in funcAbort ()
#5
#6 0x00000000004965b1 in IQTree::saveUFBoot(Checkpoint*) ()
#7 0x000000000049c04b in IQTree::syncCurrentTree() ()
#8 0x00000000004a0ac4 in IQTree::doTreeSearch() ()
#9 0x0000000000513448 in runTreeReconstruction(Params&, std::string&, IQTree&, std::vector<ModelInfo, std::allocator >&) ()
#10 0x000000000051dfd8 in runPhyloAnalysis(Params&, Checkpoint*) (
#11 0x00000000004f3e0d in main ()

[bqminh]

I believe this has been fixed