https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90697
--- Comment #1 from Jason Duerstock <jason.duerstock at gmail dot com> --- Changing -O3 to -O2 yields a successful build.
jason.duerstock at gmail dot com Fri, 31 May 2019 18:32:13 -0700
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90697
--- Comment #1 from Jason Duerstock <jason.duerstock at gmail dot com> --- Changing -O3 to -O2 yields a successful build.