From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id EA1F53861969; Thu, 15 Oct 2020 14:19:50 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org EA1F53861969 From: "tangyixuan at mail dot dlut.edu.cn" To: gcc-bugs@gcc.gnu.org Subject: [Bug c++/97446] New: gcc accepts an unnamed struct Date: Thu, 15 Oct 2020 14:19:50 +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: 11.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: tangyixuan at mail dot dlut.edu.cn 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: Thu, 15 Oct 2020 14:19:51 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D97446 Bug ID: 97446 Summary: gcc accepts an unnamed struct Product: gcc Version: 11.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: tangyixuan at mail dot dlut.edu.cn Target Milestone: --- Hi, the following code has an error in 'S3' (maybe should be 'S2'). gcc acc= epts it without error diagnostics. $ cat s.cpp template < class T > struct S1 { struct S2 { friend struct S1 ::S3; }; }; $ clang++ -c s.cpp s.cpp:3:32: error: no struct named 'S3' in 'S1' friend struct S1 ::S3; ~~~~~~~~^ 1 error generated.=