https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96942
--- Comment #19 from Jonathan Wakely <redi at gcc dot gnu.org> --- The upstream isn't necessarily malloc (although we could add a check to find out whether it is the std::new_delete_resource() if we wanted to). Suggestions for improvement are welcome. This is only the second time I've ever received any indication anybody is even using the <memory_resource> header, so I've not wasted my time tuning it.