https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100486
--- Comment #44 from Christoph Reiter <reiter.christoph at gmail dot com> --- Fore completeness: The "exceptions not working" problem now also crept into our v10.3 build with the last rebuild. Maybe some dependency change in the last two months, but no idea :/ https://github.com/msys2/MINGW-packages/issues/9771 So this isn't something new in v11