From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id E73E23858D37; Wed, 20 Jul 2022 09:54:27 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org E73E23858D37 From: "redi at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug c++/96830] GCC does not complain template-head containing requires clause Date: Wed, 20 Jul 2022 09:54:27 +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: 10.2.0 X-Bugzilla-Keywords: accepts-invalid X-Bugzilla-Severity: normal X-Bugzilla-Who: redi at gcc dot gnu.org X-Bugzilla-Status: NEW 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: cf_reconfirmed_on Message-ID: In-Reply-To: References: 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, 20 Jul 2022 09:54:28 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D96830 Jonathan Wakely changed: What |Removed |Added ---------------------------------------------------------------------------- Last reconfirmed|2020-08-28 00:00:00 |2022-7-20 --- Comment #3 from Jonathan Wakely --- Another examples: template requires true struct S { template friend struct S; }; S s; EDG: "diff.C", line 5: error: requires-clause incompatible with class template "= S" (declared at line 2) friend struct S; ^ detected during instantiation of class "S [with T=3Dint]" at l= ine 8 1 error detected in the compilation of "diff.C". Clang: diff.C:4:3: error: requires clause differs in template redeclaration template ^ diff.C:8:8: note: in instantiation of template class 'S' requested here S s; ^ diff.C:1:28: note: previous template declaration is here template requires true ^ 1 error generated.=