https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80055
--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> --- (In reply to Frederic Marchal from comment #5) > My opinion was that it would be rude to display an untranslated message to > the user. But, to spare users some head scratching when faced with a message > they are not supposed to understand, I suggested to clearly identify such > messages as intended to the gcc development team. So we agree that translating the "internal compiler error:" prefix is enough? > If internal_error messages are already clearly identified as such, then all > is well from my point of view but you may want to argue about how unlikely > it is for a final user to ever see one internal_error. It happens all the time (it shouldn't, but we have bugs).