https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99983
--- Comment #16 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-9 branch has been updated by Jonathan Wakely <r...@gcc.gnu.org>: https://gcc.gnu.org/g:9aeab5815df1ec52b1048a157ef243a4c45234b7 commit r9-9336-g9aeab5815df1ec52b1048a157ef243a4c45234b7 Author: Jonathan Wakely <jwak...@redhat.com> Date: Fri Apr 9 15:47:26 2021 +0100 libstdc++: Fix bootstrap error due to inconsistent noexcept-specifier [PR 99983] The backport of r11-8062 as r9-9328 missed out a piece, which causes bootstrap failures. PR bootstrap/99983 * include/bits/hashtable.h (_Hashtable): Fix noexcept-specifier on definition to match the one on the declaration.