From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 1888) id 6BEED3858C2C; Mon, 28 Mar 2022 18:17:20 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 6BEED3858C2C MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="utf-8" From: Patrick Palka To: gcc-cvs@gcc.gnu.org Subject: [gcc r12-7861] c++: reject concept w/ multiple tparm lists [PR105067] X-Act-Checkin: gcc X-Git-Author: Patrick Palka X-Git-Refname: refs/heads/master X-Git-Oldrev: ecb4882e362e80a1bf172453ac9b366edbb4e89c X-Git-Newrev: 23e57329c6516a81a8d3eb21b365ca8a0ec0c41b Message-Id: <20220328181720.6BEED3858C2C@sourceware.org> Date: Mon, 28 Mar 2022 18:17:20 +0000 (GMT) X-BeenThere: gcc-cvs@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-cvs mailing list List-Unsubscribe: , List-Archive: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 28 Mar 2022 18:17:20 -0000 https://gcc.gnu.org/g:23e57329c6516a81a8d3eb21b365ca8a0ec0c41b commit r12-7861-g23e57329c6516a81a8d3eb21b365ca8a0ec0c41b Author: Patrick Palka Date: Mon Mar 28 14:15:39 2022 -0400 c++: reject concept w/ multiple tparm lists [PR105067] We weren't rejecting a concept declared with multiple template parameter lists. PR c++/105067 gcc/cp/ChangeLog: * pt.cc (finish_concept_definition): Check that a concept is declared with exactly one template parameter list. gcc/testsuite/ChangeLog: * g++.dg/cpp2a/concepts-err4.C: New test. Diff: --- gcc/cp/pt.cc | 6 ++++++ gcc/testsuite/g++.dg/cpp2a/concepts-err4.C | 6 ++++++ 2 files changed, 12 insertions(+) diff --git a/gcc/cp/pt.cc b/gcc/cp/pt.cc index 3df509bbed0..cd07e48cb5a 100644 --- a/gcc/cp/pt.cc +++ b/gcc/cp/pt.cc @@ -28815,6 +28815,12 @@ finish_concept_definition (cp_expr id, tree init) return error_mark_node; } + if (current_template_depth > 1) + { + error_at (loc, "concept %qE has multiple template parameter lists", *id); + return error_mark_node; + } + /* Initially build the concept declaration; its type is bool. */ tree decl = build_lang_decl_loc (loc, CONCEPT_DECL, *id, boolean_type_node); DECL_CONTEXT (decl) = current_scope (); diff --git a/gcc/testsuite/g++.dg/cpp2a/concepts-err4.C b/gcc/testsuite/g++.dg/cpp2a/concepts-err4.C new file mode 100644 index 00000000000..57a96a095c7 --- /dev/null +++ b/gcc/testsuite/g++.dg/cpp2a/concepts-err4.C @@ -0,0 +1,6 @@ +// PR c++/105067 +// { dg-do compile { target c++20 } } + +template +template +concept C = true; // { dg-error "parameter list" }