https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89780
--- Comment #3 from S. Davis Herring <herring at lanl dot gov> --- Does this need to be language-version-dependent, given https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1825r0.html (in C++20) and https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2022/p2266r3.html (in C++23)?
