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From: Ville Voutilainen <ville.voutilainen@gmail.com>
Date: Sat, 08 Dec 2018 17:17:00 -0000
Message-ID: <CAFk2RUYYLv-YguwazLTCxQMHwxDQRivVKqj_rxn4cr1eKLC1dw@mail.gmail.com>
Subject: Re: C++ PATCH for c++/88136, -Wdeprecated-copy too noisy
To: Jakub Jelinek <jakub@redhat.com>
Cc: Jason Merrill <jason@redhat.com>, gcc-patches List <gcc-patches@gcc.gnu.org>
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On Sat, 8 Dec 2018 at 18:58, Jakub Jelinek <jakub@redhat.com> wrote:
> > g++ -c -pipe -O2 -fPIC -std=c++1z -fvisibility=hidden
> > -fvisibility-inlines-hidden -ffunction-sections -fdata-sections
> > -fno-exceptions -Wall -W -Wvla -Wdate-time -Wshift-overflow=2
>
> -W is an alias to -Wextra.

Yeah. Jason, I seem to have code that user-provides a copy constructor
(seemingly for no particular reason),
doesn't bother declaring a copy assignment operator, and still breaks
magnificently. :) There is no bug
in it; the assignment works as expected, so that's a false positive. I
am going to suggest taking this warning
out of -Wextra and making it completely separate for GCC 9.