https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109122
--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> --- Ah, looks like we're trying to print a name of a TYPE_PTRMEMFUNC_P, but it doesn't have one; build_ptrmemfunc_type has: 11025 /* Zap out the name so that the back end will give us the debugging 11026 information for this anonymous RECORD_TYPE. */ 11027 TYPE_NAME (t) = NULL_TREE;