[Bug c++/109235] nodiscard attribute on class not copied to the constructors

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109235

--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Teis Johansen from comment #0)
> I have tried implementing std::experimental::scope_exit

N.B. this is already present in the upcoming GCC 13:

https://gcc.gnu.org/gcc-13/changes.html#libstdcxx