https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80265
--- Comment #15 from Jason Merrill <jason at gcc dot gnu.org> --- (In reply to Pedro Alves from comment #6) > Hmm. I'd argue that __builtin_constant_p (s) should return true in that case, > since we're in a constexpr? No, the compiler is right; the address of the local array variable is not constant, only its contents.
