[Bug c++/82113] RVO isn't applied to base class constructor call in C++17

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82113

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
c.f. https://wg21.link/cwg2403