[Bug libstdc++/103951] [C++2b] string_view range constructor, "exception specification ... depends on itself"

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103951

--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
This would be solved by
http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2021/p2499r0.html but I
think the std::lib code is behaving exactly as the C++23 draft requires.