[Bug libstdc++/84568] libstdc++-v3 configure checks for atomic operations fail on riscv

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84568

--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #5)
> (In reply to palmer from comment #3)
> > It looks like LLVM already has inline atomics, so presumably the same issues
> > would arise when mixing libstdc++ libraries compiled with LLVM and GCC.
> 
> Yup.

But not just "when mixing libstdc++ libraries". When mixing pretty much any C++
code that uses libstdc++ headers.