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 0723F389365D; Wed, 22 Jul 2020 13:57:11 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 0723F389365D
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org;
 s=default; t=1595426232;
 bh=GfDmSl449ukaSoby5eFTB0HWGxr19+eBhY0m7r/EkrE=;
 h=From:To:Subject:Date:In-Reply-To:References:From;
 b=Mtz9xUA2mjRxnHnvR2GGGkfUxw/bM0RC14NuMBjikwlfATMuGN1h4OiW1r5Tt3xGQ
 PNPBpvWsrfDnOPrEqfysclBp0kvcmNAACsCwLlBPMrqBHg+I55xbQhAnf3L7W9wJsL
 0GW8nhIS1wCxTC7EjjkPqEAJgUb5DxV7pp2f3e7Q=
From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug other/42540] c++ error message [vtable undefined] is unhelpful
Date: Wed, 22 Jul 2020 13:57:11 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: other
X-Bugzilla-Version: 4.5.0
X-Bugzilla-Keywords: diagnostic
X-Bugzilla-Severity: enhancement
X-Bugzilla-Who: redi at gcc dot gnu.org
X-Bugzilla-Status: ASSIGNED
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: jyasskin at gmail dot com
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-42540-4-gmdd5VwymO@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-42540-4@http.gcc.gnu.org/bugzilla/>
References: <bug-42540-4@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
X-BeenThere: gcc-bugs@gcc.gnu.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Gcc-bugs mailing list <gcc-bugs.gcc.gnu.org>
List-Unsubscribe: <http://gcc.gnu.org/mailman/options/gcc-bugs>,
 <mailto:gcc-bugs-request@gcc.gnu.org?subject=unsubscribe>
List-Archive: <https://gcc.gnu.org/pipermail/gcc-bugs/>
List-Post: <mailto:gcc-bugs@gcc.gnu.org>
List-Help: <mailto:gcc-bugs-request@gcc.gnu.org?subject=help>
List-Subscribe: <http://gcc.gnu.org/mailman/listinfo/gcc-bugs>,
 <mailto:gcc-bugs-request@gcc.gnu.org?subject=subscribe>
X-List-Received-Date: Wed, 22 Jul 2020 13:57:12 -0000

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D42540

--- Comment #13 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #3)
> The linker error alone doesn't make the root cause obvious, but it's a
> fairly well known and well documented problem:
> http://www.parashift.com/c++-faq-lite/strange-inheritance.html#faq-23.10

A better link is now:
https://gcc.gnu.org/wiki/VerboseDiagnostics#undefined_reference_to_vtable_f=
or_X=