https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104646
--- Comment #6 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-9 branch has been updated by Jason Merrill <ja...@gcc.gnu.org>: https://gcc.gnu.org/g:7b4bd8dbd8d07e298528b0f033102ce8f693e739 commit r9-10171-g7b4bd8dbd8d07e298528b0f033102ce8f693e739 Author: Jason Merrill <ja...@redhat.com> Date: Thu Apr 14 15:34:14 2022 -0400 c++: constexpr trivial -fno-elide-ctors [PR104646] The constexpr constructor checking code got confused by the expansion of a trivial copy constructor; we don't need to do that checking for defaulted ctors, anyway. PR c++/104646 gcc/cp/ChangeLog: * constexpr.c (maybe_save_constexpr_fundef): Don't do extra checks for defaulted ctors. gcc/testsuite/ChangeLog: * g++.dg/cpp0x/constexpr-fno-elide-ctors1.C: New test.