https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97842
--- Comment #1 from Iain Buclaw <ibuclaw at gdcproject dot org> --- It would be great if you can use dustmite to make a reduced test case, preferably by reducing phobos as well so it's just a standalone test. https://github.com/CyberShadow/DustMite