https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71031
--- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> --- I don't understand how could r231098 cause this though. If I put breakpoints on type_in_anonymous_namespace_p / type_with_linkage_p / odr_type_p, it doesn't stop at them so...