https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115706
--- Comment #4 from Sam James <sjames at gcc dot gnu.org> --- I'd really suggest filing one bug per issue in future. Making it very clear what a specific bug is about and how to reproduce with a standalone attachment is good too (your last issue at least seems to need your project, but not looked properly). Modules are considered to be experimental still and I'd expect someone to look but not immediately.