https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113129
--- Comment #3 from Larry Smith <admin at hexadigm dot com> --- UPDATE: This issue is presumably the same as this (didn't come across it when I searched for any similar bugs prior to posting): https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109679 Agree with Nicolai Josuttis in above post however, issue is important to fix (modules still under development in GCC presumably).