[Bug libstdc++/103924] views::join combined with std::string cannot be used in constant expressions

[ppalka at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103924

--- Comment #6 from Patrick Palka <ppalka at gcc dot gnu.org> ---
(In reply to Giuseppe D'Angelo from comment #5)
> Here's an even simpler testcase, rejected by GCC but accepted by Clang (with
> libstdc++):
Interesting, mind creating a separate PR for this? It could be a considered a
regression since GCC 13 accepts the code.