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 F06B43858D32; Tue, 11 Oct 2022 19:03:00 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org F06B43858D32
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org;
	s=default; t=1665514980;
	bh=haYRtcHKRPLTXjrxZnvcT9T0gxMUgSBRykHZkcOKJ/A=;
	h=From:To:Subject:Date:In-Reply-To:References:From;
	b=pwkFppdaIlhZm1uXMHVsh+9OAetB5poQtLYhf8/LkAnGcAyFQNzjvY+nu1hpafHVf
	 Jt0TIjHaRFRVMiXanvt+oJzz6kriIIjKaivFi99VKLSUoF4DhN5KOmTTjQgStz7gCC
	 O64SR2CJ2cBIi8bVHvD0P6tFCtiUcCCXEIdNJXlM=
From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/99377] [modules] undefined std::string_view::empty() if
 referenced in inline exported function
Date: Tue, 11 Oct 2022 19:02:59 +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: 11.0
X-Bugzilla-Keywords: link-failure
X-Bugzilla-Severity: normal
X-Bugzilla-Who: cvs-commit at gcc dot gnu.org
X-Bugzilla-Status: REOPENED
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: nathan at gcc dot gnu.org
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-99377-4-kZmt1kkEex@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-99377-4@http.gcc.gnu.org/bugzilla/>
References: <bug-99377-4@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=3D99377

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

https://gcc.gnu.org/g:2ceb4d531a303f3e70d8bb218c8759e6c0688f62

commit r13-3235-g2ceb4d531a303f3e70d8bb218c8759e6c0688f62
Author: Patrick Palka <ppalka@redhat.com>
Date:   Tue Oct 11 15:02:01 2022 -0400

    c++ modules: lazy loading from within template [PR99377]

    Here when lazily loading the binding for f due to its first use from the
    template g, processing_template_decl is set which causes the call to
    note_vague_linkage_fn from module_state::read_cluster to have no effect,
    and thus we never push f onto deferred_fns and end up never emitting its
    definition despite needing it.

    The behavior of the lazy loading machinery shouldn't be sensitive to
    whether we're inside a template, so to that end this patch makes us
    clear processing_template_decl in the entrypoints lazy_load_binding and
    lazy_load_pendings.

            PR c++/99377

    gcc/cp/ChangeLog:

            * module.cc (lazy_load_binding): Clear processing_template_decl.
            (lazy_load_pendings): Likewise.

    gcc/testsuite/ChangeLog:

            * g++.dg/modules/pr99377-2_a.C: New test.
            * g++.dg/modules/pr99377-2_b.C: New test.=