https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102067
--- Comment #21 from Matt Godbolt <matt at godbolt dot org> --- Thanks, I'd love to upgrade but in this instance I'm stuck on GCC 9.x until the rest of my company can move to it. Nothing annoys me more than having to say that, but ... at least we know what it is and that it's fixed in the future :) This will help me make a case to upgrade!