Re: [PATCH] [RFC] RAII auto_mpfr and autp_mpz

[Alexander Monakov via Gcc-patches]

On Tue, 7 Mar 2023, Jonathan Wakely wrote:

> > Shouldn't this use the idiom suggested in ansidecl.h, i.e.
> >
> >   private:
> >     DISABLE_COPY_AND_ASSIGN (auto_mpfr);
> 
> 
> Why? A macro like that (or a base class like boost::noncopyable) has
> some value in a code base that wants to work for both C++03 and C++11
> (or later). But in GCC we know we have C++11 now, so we can just
> delete members. I don't see what the macro adds.

Evidently it's possible to forget to delete one of the members, as
showcased in this very thread.

The idiom is also slightly easier to read.

Alexander