https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103295
--- Comment #5 from cqwrteur <unlvsur at live dot com> --- (In reply to Andrew Pinski from comment #3) > This could be an unimplemented feature in clang with respect to C++23 by the > way. The problem is that it has a silent undefined behavior in the code, the string does not give the union a storage, the lifetime of the sso buffer is not activated under constexpr context. (although a proposal is trying to fix that.)
