https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108071
--- Comment #2 from Manuel Lauss <manuel.lauss at googlemail dot com> --- (In reply to Richard Biener from comment #1) I get the same errors, but the whole file can be compiled without errors with gcc-12 (it needs to be preprocessed with gcc-12 as well), and with a gcc-13 checkout from 9 days ago. So in the last 9 days, something was introduced which caused these errors to appear.