https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107136
--- Comment #7 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Patrick Palka <ppa...@gcc.gnu.org>: https://gcc.gnu.org/g:e87879a9f5c2869de177c4dde2172f277e81ef1a commit r13-3065-ge87879a9f5c2869de177c4dde2172f277e81ef1a Author: Patrick Palka <ppa...@redhat.com> Date: Tue Oct 4 12:23:46 2022 -0400 c++: install cp-trait.def as part of plugin headers [PR107136] This is apparently needed since we include cp-trait.def from cp-tree.h (in order to define the cp_trait_kind enum), as with operators.def. PR c++/107136 gcc/cp/ChangeLog: * Make-lang.in (CP_PLUGIN_HEADERS): Add cp-trait.def.