https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80265
--- Comment #16 from Jason Merrill <jason at gcc dot gnu.org> --- (In reply to Marc Glisse from comment #13) > it seems better than abusing __builtin_constant_p, which is getting > contradictory requirements from its various uses: > - constexpr (forces very early lowering) I'm not sure what you mean here; constexpr specifically delays lowering within a constexpr function until we're actually trying to evaluate to a constant value.
