From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugzilla@gcc.gnu.org>
Received: by sourceware.org (Postfix, from userid 48)
	id 9B10E3858D28; Thu,  8 Sep 2022 08:52:27 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 9B10E3858D28
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org;
	s=default; t=1662627147;
	bh=Cg9dYw/8JPINnJX51i2dZKf3AZRMdLksz5yIHYOQNBo=;
	h=From:To:Subject:Date:In-Reply-To:References:From;
	b=u8qm8YnFDad0D69ceoYC3bjeovhdfbArGJNMcpCYTwJaV763polfrIhTjjEJFtQMm
	 wD92WxGg305uo/H20zqIzJXFD5p4CsPKFmoOTP9Sep4USr+myiH7BXmWvmsc2Pros1
	 YFUzH1OB3Kqr3QfyB0MnanO4QL3TLbURXg3W6CV8=
From: "avi at scylladb dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/106847] deprecated class data member makes the class
 generate diagnostics even when the member is not used
Date: Thu, 08 Sep 2022 08:52:26 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: c++
X-Bugzilla-Version: 13.0
X-Bugzilla-Keywords: diagnostic
X-Bugzilla-Severity: normal
X-Bugzilla-Who: avi at scylladb dot com
X-Bugzilla-Status: UNCONFIRMED
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-106847-4-a4TKx8HDnX@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-106847-4@http.gcc.gnu.org/bugzilla/>
References: <bug-106847-4@http.gcc.gnu.org/bugzilla/>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/
Auto-Submitted: auto-generated
MIME-Version: 1.0
List-Id: <gcc-bugs.sourceware.org>

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D106847

--- Comment #3 from Avi Kivity <avi at scylladb dot com> ---
But I need it to be copied. It's a struct of options:


    struct options {
         bool frob =3D false;
         [[derecated]] bool quux =3D false; // will be removed soon
         bool grue =3D false;
     };


The fact that it's deprecated doesn't mean it can be coerced to false.

Sure, I can create custom constructors and assignment operators, but I lose
designated initializers.

btw, the destructor doesn't trigger the deprecation warning, even though it
does use the deprecated member.


I think it's more reasonable to only emit the warning when the member is
explicitly used.=