https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102036
--- Comment #1 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Jonathan Wakely <r...@gcc.gnu.org>: https://gcc.gnu.org/g:d8b7282ea27e02f687272cb8ea5f66ca900f1582 commit r12-3118-gd8b7282ea27e02f687272cb8ea5f66ca900f1582 Author: Jonathan Wakely <jwak...@redhat.com> Date: Tue Aug 24 12:31:06 2021 +0100 libstdc++: Fix mismatched class-key tags Clang warns about this, but GCC doesn't (see PR c++/102036). Signed-off-by: Jonathan Wakely <jwak...@redhat.com> libstdc++-v3/ChangeLog: * src/c++11/cxx11-shim_facets.cc: Fix mismatched class-key in explicit instantiation definitions.