Program received signal SIGABRT, Aborted.
[Switching to Thread 0x7f7cc7449700 (LWP 2258)]
0x00007f7cc6306235 in raise () from /lib/libc.so.6
(gdb) bt
#0  0x00007f7cc6306235 in raise () from /lib/libc.so.6
#1  0x00007f7cc6307753 in abort () from /lib/libc.so.6
#2  0x00007f7cc6b89f64 in __gnu_cxx::__verbose_terminate_handler () from /usr/lib/gcc/x86_64-pc-linux-gnu/4.3.1/libstdc++.so.6
#3  0x00007f7cc6b88396 in ?? () from /usr/lib/gcc/x86_64-pc-linux-gnu/4.3.1/libstdc++.so.6
#4  0x00007f7cc6b883c3 in std::terminate () from /usr/lib/gcc/x86_64-pc-linux-gnu/4.3.1/libstdc++.so.6
#5  0x00007f7cc6b884aa in __cxa_throw () from /usr/lib/gcc/x86_64-pc-linux-gnu/4.3.1/libstdc++.so.6
#6  0x00007f7cc6b260f7 in std::__throw_out_of_range () from /usr/lib/gcc/x86_64-pc-linux-gnu/4.3.1/libstdc++.so.6
#7  0x00007f7cc6b678b4 in std::string::compare () from /usr/lib/gcc/x86_64-pc-linux-gnu/4.3.1/libstdc++.so.6
#8  0x0000000000462aab in BasicVersion::compare (left=@0x1dd58b0, right=@0x1dd5b60) at ./eixTk/compare.h:44
#9  0x0000000000462c74 in BasicVersion::compare (left=<value optimized out>, right=<value optimized out>) at portage/basicversion.cc:241
#10 0x0000000000466bac in Package::checkDuplicates (this=0x1dd5470, version=0x1dd5c00) at portage/package.cc:95
#11 0x000000000043a3ac in MetadataCache::readCategory (this=0xa16ff0, vec=@0x1d46ce0) at ./portage/package.h:197
#12 0x0000000000425152 in update (outputfile=0xa17e88 "/var/cache/eix", cache_table=@0x7fffcf476bf0, portage_settings=@0x7fffcf476a10, will_modify=true, 
    exclude_labels=@0x7fffcf476c10) at update-eix.cc:484
#13 0x00000000004263b2 in run_update_eix (argc=<value optimized out>, argv=<value optimized out>) at update-eix.cc:418
#14 0x000000000049a683 in main (argc=1, argv=0x7fffcf476fe8) at main/main.cc:126