libstdc++-v3/testsuite/20_util/reference_wrapper/ref_neg.cc

   1 // Copyright (C) 2011-2022 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 3, or (at your option)
   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING3.  If not see
  16 // <http://www.gnu.org/licenses/>.
  17
  18 // 20.8.3 Class template reference_wrapper
  19
  20 // { dg-do compile { target c++11 } }
  21
  22 #include <functional>
  23
  24 struct X { };
  25 X rval();
  26 X&& rvalref();
  27
  28 void test01()
  29 {
  30   std::ref(1);          // { dg-error "deleted" }
  31   std::cref(1);         // { dg-error "deleted" }
  32   std::ref( int() );    // { dg-error "deleted" }
  33   std::cref( int() );   // { dg-error "deleted" }
  34   std::ref(rval());     // { dg-error "deleted" }
  35   std::cref(rvalref()); // { dg-error "deleted" }
  36 }
  37
  38 int main()
  39 {
  40   test01();
  41 }
  42
  43 // { dg-prune-output "declared here" }