libstdc++-v3/testsuite/20_util/unique_ptr/assign/48635_neg.cc

   1 // { dg-do compile { target c++11 } }
   2
   3 // Copyright (C) 2011-2023 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 3, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License
  17 // along with this library; see the file COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20 #include <memory>
  21
  22 struct D;
  23
  24 struct B
  25 {
  26  B& operator=(D&) = delete;
  27
  28  template<class T>
  29    void operator()(T*) const {}
  30 };
  31
  32 struct D : B { };
  33
  34 // libstdc++/48635
  35 void f()
  36 {
  37   B b;
  38   D d;
  39
  40   std::unique_ptr<int, B&> ub(nullptr, b);
  41   std::unique_ptr<int, B> ub2(nullptr, b);
  42   std::unique_ptr<int, D&> ud(nullptr, d);
  43   ub = std::move(ud); // { dg-error "no match" }
  44   ub2 = ud; // { dg-error "no match" }
  45
  46   std::unique_ptr<int[], B&> uba(nullptr, b);
  47   std::unique_ptr<int[], D&> uda(nullptr, d);
  48   uba = std::move(uda); // { dg-error "no match" }
  49 }
  50
  51 // { dg-prune-output "no type" }