https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116696
--- Comment #3 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The trunk branch has been updated by Jason Merrill <ja...@gcc.gnu.org>: https://gcc.gnu.org/g:4ee692337c4ec18fe9be3df34f3607ea3de5ef93 commit r15-3631-g4ee692337c4ec18fe9be3df34f3607ea3de5ef93 Author: Jason Merrill <ja...@redhat.com> Date: Thu Sep 12 16:22:02 2024 -0400 c++: -fimplicit-constexpr diagnostic improvement [PR116696] PR116696 expressed surprise that explicit 'constexpr' was needed on one function; this was because the function isn't 'inline', and -fimplicit-constexpr doesn't try to promote non-inline functions. Let's be more helpful in that situation, and also help trace through functions that were promoted. PR c++/116696 gcc/cp/ChangeLog: * constexpr.cc (explain_invalid_constexpr_fn): When -fimplicit-constexpr, also explain inline functions, and point out non-inline functions. gcc/testsuite/ChangeLog: * g++.dg/DRs/dr2478.C: Prune extra diagnostic. * g++.dg/ext/fimplicit-constexpr1.C: New test.
