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 A515C3858028; Sat,  1 Jul 2023 01:28:36 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org A515C3858028
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org;
	s=default; t=1688174916;
	bh=h3FMUNQHPKunj36o/v+8S1Li/moU0kGWGtSM1P4Cbqs=;
	h=From:To:Subject:Date:In-Reply-To:References:From;
	b=mSOYjQuRGUY6qSyg3W6UZ0kpGkp7rO2emRVoypDqjlV2cXfVM3s9UFNRII9mZy18u
	 muWWg7lgr2PnVjsCkqhqEpx2h3g+7oO9XM9BZdIZDwNznlnImAiV23zXQZ+Amma9vH
	 mffUjFiCjxuCX3xkuQ5Rpi1w54+Bd3g8GUdsc2wE=
From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/110468] [12/13/14 regression] Internal compiler error in
 nothrow_spec_p
Date: Sat, 01 Jul 2023 01:28:35 +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: 14.0
X-Bugzilla-Keywords: ice-on-valid-code
X-Bugzilla-Severity: normal
X-Bugzilla-Who: cvs-commit at gcc dot gnu.org
X-Bugzilla-Status: ASSIGNED
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: ppalka at gcc dot gnu.org
X-Bugzilla-Target-Milestone: 12.4
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-110468-4-EvqE1WoR4k@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-110468-4@http.gcc.gnu.org/bugzilla/>
References: <bug-110468-4@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=3D110468

--- Comment #14 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-13 branch has been updated by Patrick Palka
<ppalka@gcc.gnu.org>:

https://gcc.gnu.org/g:23c64450cbce916547142519a72075d1930c8282

commit r13-7517-g23c64450cbce916547142519a72075d1930c8282
Author: Patrick Palka <ppalka@redhat.com>
Date:   Thu Jun 29 16:10:18 2023 -0400

    c++: NSDMI instantiation during overload resolution [PR110468]

    Here we find ourselves instantiating the NSDMI for A<1>::m when
    computing argument conversions during overload resolution, and
    thus tf_conv is set.  The flag causes mark_used for the constructor
    used in the NSDMI to exit early and not instantiate its noexcept-spec,
    which eventually leads to an ICE from nothrow_spec_p.

    This patch fixes this by clearing any special tsubst flags during
    instantiation of an NSDMI, since the result should be independent of
    the context that requires the instantiation.

            PR c++/110468

    gcc/cp/ChangeLog:

            * init.cc (maybe_instantiate_nsdmi_init): Mask out all
            tsubst flags except for tf_warning_or_error.

    gcc/testsuite/ChangeLog:

            * g++.dg/cpp0x/noexcept79.C: New test.

    (cherry picked from commit 9479da4515f7d019b4ef282d0e21536431c44f71)=