Author: Vlad Serebrennikov Date: 2024-10-08T22:41:33+04:00 New Revision: eaea5f6f952b6059cebfe87ea9800a3a6516f9ed
URL: https://github.com/llvm/llvm-project/commit/eaea5f6f952b6059cebfe87ea9800a3a6516f9ed DIFF: https://github.com/llvm/llvm-project/commit/eaea5f6f952b6059cebfe87ea9800a3a6516f9ed.diff LOG: [clang] Add test for CWG110 "Can template functions and classes be declared in the same scope?" (#111446) [P1787R6](https://wg21.link/p1787r6): > [CWG110](https://cplusplus.github.io/CWG/issues/110.html) is resolved by reducing the restriction in [temp.pre] to a note (matching the behavior of GCC, Clang, and ICC). Wording: see changes to [temp.pre]/7 I believe the wording for the questions raised in the issue is now the definition of corresponding declarations that is given in [[basic.scope.scope]/4](https://eel.is/c++draft/basic.scope#scope-4): > Two declarations correspond if they (re)introduce the same name, both declare constructors, or both declare destructors, unless > — either is a using-declarator, or > — one declares a type (not a typedef-name) and the other declares a variable, non-static data member other than of an anonymous union ([class.union.anon]), enumerator, function, or function template, or > — each declares a function or function template and they do not declare corresponding overloads. Then it's used as an input for the definition of potentially conflicting declarations given in [[basic.scope.scope]/6](https://eel.is/c++draft/basic.scope#scope-6). Answering the question in the title: yes, having a function template and a type with the same name that has the same target scope is well-formed. A keen eye might spot that the current [[temp.pre]/7](https://eel.is/c++draft/temp.pre#7) note doesn't reflect all of the exceptions from the definition of corresponding declarations in [basic.scope.scope]/4, namely 4.1 and 4.2. I believe the note is defective, and I opened an editorial PR against the draft to fix that: https://github.com/cplusplus/draft/pull/7284. Added: Modified: clang/test/CXX/drs/cwg1xx.cpp clang/www/cxx_dr_status.html Removed: ################################################################################ diff --git a/clang/test/CXX/drs/cwg1xx.cpp b/clang/test/CXX/drs/cwg1xx.cpp index d6ee0844458b1d..6aec8b65c91f12 100644 --- a/clang/test/CXX/drs/cwg1xx.cpp +++ b/clang/test/CXX/drs/cwg1xx.cpp @@ -119,6 +119,20 @@ namespace cwg109 { // cwg109: yes }; } +namespace cwg110 { // cwg110: 2.8 +template <typename T> +void f(T); + +class f {}; + +template <typename T> +void f(T, T); + +class f g; +void (*h)(int) = static_cast<void(*)(int)>(f); +void (*i)(int, int) = static_cast<void(*)(int, int)>(f); +} // namespace cwg110 + namespace cwg111 { // cwg111: dup 535 struct A { A(); A(volatile A&, int = 0); A(A&, const char * = "foo"); }; struct B : A { B(); }; // #cwg111-B diff --git a/clang/www/cxx_dr_status.html b/clang/www/cxx_dr_status.html index ba63106ccc3875..1a67b6103cf43e 100755 --- a/clang/www/cxx_dr_status.html +++ b/clang/www/cxx_dr_status.html @@ -705,7 +705,7 @@ <h2 id="cxxdr">C++ defect report implementation status</h2> <td><a href="https://cplusplus.github.io/CWG/issues/110.html";>110</a></td> <td>CD6</td> <td>Can template functions and classes be declared in the same scope?</td> - <td class="unknown" align="center">Unknown</td> + <td class="full" align="center">Clang 2.8</td> </tr> <tr id="111"> <td><a href="https://cplusplus.github.io/CWG/issues/111.html";>111</a></td> _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
