https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91905
--- Comment #4 from David Edelsohn <dje at gcc dot gnu.org> --- I agree that the current bug report is incomplete and nearly useless. I am working with the OpenBLAS community to try to reproduce it and narrow it down. This may have been a bug in GCC 8.3.0 that already was fixed.