[Bug libstdc++/121979] [C++26] Implement P2530R3, Hazard Pointers

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121979

--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
P.S. the libstdc++ mailing list is a better place to discuss the implementation
than here.