https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78409
--- Comment #2 from Orion Poplawski <orion at cora dot nwra.com> --- So, what exactly can I get you? I'm building https://www.cora.nwra.com/~orion/fedora/octave-4.2.0-1.fc26.src.rpm on Fedora rawhide. It fails during the tests: libinterp/dldfcn/__osmesa_print__.cc-tst ....................panic: Segmentation fault -- stopping myself... You can run the test in gdb with: cd octave-4.2.0 ./run-octave -g gdb> run octave:1> test __osmesa_print__