[Bug libstdc++/93059] char and char8_t does not talk with each other with memcpy. std::copy std::copy_n, std::fill, std::fill_n, std::uninitialized_copy std::uninitialized_copy_n, std::fill, std::uninitialized_fill_n fails to convert to memxxx functions

[euloanty at live dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93059

--- Comment #16 from fdlbxtqi <euloanty at live dot com> ---
(In reply to Marc Glisse from comment #13)
> (In reply to fdlbxtqi from comment #11)
> > TBH. I would rather see the library does the optimization instead of the
> > compiler. I do not trust the compiler can always optimize this stuff.
> 
> If we have both, that looks even safer ;-)

Concepts are no doubt a huge deal breaker.