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 9430E3857C5E; Wed, 10 Mar 2021 21:12:40 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 9430E3857C5E
From: "nathan at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/99528] [modules] ICE with iostream& vector
Date: Wed, 10 Mar 2021 21:12:40 +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: 
X-Bugzilla-Severity: normal
X-Bugzilla-Who: nathan at gcc dot gnu.org
X-Bugzilla-Status: ASSIGNED
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-99528-4-XkqwOYE8s9@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-99528-4@http.gcc.gnu.org/bugzilla/>
References: <bug-99528-4@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: <https://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: <https://gcc.gnu.org/mailman/listinfo/gcc-bugs>,
 <mailto:gcc-bugs-request@gcc.gnu.org?subject=subscribe>
X-List-Received-Date: Wed, 10 Mar 2021 21:12:40 -0000

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D99528

--- Comment #1 from Nathan Sidwell <nathan at gcc dot gnu.org> ---
// bug.h
template<typename _Tp>
class new_allocator
{
public:
  template<typename _Tp1>
  new_allocator(const new_allocator<_Tp1>&) noexcept { }
};

extern template class new_allocator<char>;
// bug_a.H
#include "bug.h"
// bug_b.H
#include "bug.h"
// bug_c.C
import "bug_a.H";
import "bug_b.H";

/cc1plus -quiet -fmodule-header bug_a.H && ./cc1plus -quiet -fmodule-header
bug_b.H && ./cc1plus -quiet -fmodules-ts bug_c.C -fno-module-lazy=20
bug_c.C:3:18: internal compiler error: tree check: expected template_decl, =
have
function_decl in decl_value, at cp/module.cc:7938
    3 | import "bug_b.H";
      |                  ^
0x1acdd53 tree_check_failed(tree_node const*, char const*, int, char const*,
...)
        ../../../src/gcc/tree.c:9816
0xad685c tree_check(tree_node*, char const*, int, char const*, tree_code)
        ../../../src/gcc/tree.h:3353
0xcc2df7 trees_in::decl_value()
        ../../../src/gcc/cp/module.cc:7938
0xcc8e49 trees_in::tree_node(bool)
        ../../../src/gcc/cp/module.cc:9174
0xce2a7f module_state::read_cluster(unsigned int)
        ../../../src/gcc/cp/module.cc:14858
0xcebdc6 module_state::load_section(unsigned int, binding_slot*)
        ../../../src/gcc/cp/module.cc:18129
0xcebaf0 module_state::read_language(bool)
        ../../../src/gcc/cp/module.cc:18058
0xcee601 direct_import
        ../../../src/gcc/cp/module.cc:18920=