From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id E819F38618BB; Wed, 16 Jun 2021 17:21:16 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org E819F38618BB From: "gscfq@t-online.de" To: gcc-bugs@gcc.gnu.org Subject: [Bug c++/101099] New: [9/10/11/12 Regression] ICE in type_unification_real, at cp/pt.c:22173 Date: Wed, 16 Jun 2021 17:21:16 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: c++ X-Bugzilla-Version: 12.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: gscfq@t-online.de 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: bug_id short_desc product version bug_status bug_severity priority component assigned_to reporter target_milestone Message-ID: 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 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 16 Jun 2021 17:21:17 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D101099 Bug ID: 101099 Summary: [9/10/11/12 Regression] ICE in type_unification_real, at cp/pt.c:22173 Product: gcc Version: 12.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: gscfq@t-online.de Target Milestone: --- Started with r9 between and 20190615 and 20190727, r8 accepts it. With options -std=3Dgnu++11 -fconcepts and several testsuite files or the following variant : $ cat z1.cc #include constexpr auto list =3D { 1, 2, 3 }; $ g++-8 -c z1.cc -std=3Dgnu++11 -fconcepts $ $ g++-12-20210613 -c z1.cc -std=3Dgnu++11 -fconcepts z1.cc:2:33: internal compiler error: in type_unification_real, at cp/pt.c:2= 2173 2 | constexpr auto list =3D { 1, 2, 3 }; | ^ 0x8313d8 type_unification_real ../../gcc/cp/pt.c:22173 0x819606 do_auto_deduction(tree_node*, tree_node*, tree_node*, int, auto_deduction_context, tree_node*, int) ../../gcc/cp/pt.c:29619 0x745bf6 cp_finish_decl(tree_node*, tree_node*, bool, tree_node*, int) ../../gcc/cp/decl.c:7834 0x802791 cp_parser_init_declarator ../../gcc/cp/parser.c:22044 0x7e348a cp_parser_simple_declaration ../../gcc/cp/parser.c:14587 0x8081f5 cp_parser_declaration ../../gcc/cp/parser.c:14284 0x80770b cp_parser_translation_unit ../../gcc/cp/parser.c:4942 0x80770b c_parse_file() ../../gcc/cp/parser.c:45611 0x8d7412 c_common_parse_file() ../../gcc/c-family/c-opts.c:1219=