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

   1 // { dg-do compile { target c++11 } }
   2
   3 // Copyright (C) 2008-2020 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 base { virtual ~base() {} };
  23 struct derived : base {};
  24
  25 void
  26 test01()
  27 {
  28   std::unique_ptr<derived> p1(new derived);
  29   std::unique_ptr<derived> p2(new derived);
  30 //  p2 = p1;  // should not compile
  31   p2 = std::move(p1);
  32   std::unique_ptr<base> p3(new base);
  33 //  p3 = p2;  // should not compile
  34   p3 = std::move(p2);
  35 }
  36
  37 void
  38 test02()
  39 {
  40   std::unique_ptr<int[]> p1(new int(420));
  41   std::unique_ptr<int[]> p2 = p1; // { dg-error "deleted" }
  42 }
  43
  44 void
  45 test03()
  46 {
  47   std::unique_ptr<int[2]> p1(new int[3]); // { dg-error "no match" }
  48   std::unique_ptr<int[2]> p2 = p1; // { dg-error "deleted" }
  49 }
  50
  51 struct base_pointer { operator base*() const { return nullptr; } };
  52
  53 template<typename T>
  54 struct deleter
  55 {
  56   deleter() = default;
  57   template<typename U>
  58     deleter(const deleter<U>) { }
  59   typedef T pointer;
  60   void operator()(T) const { }
  61 };
  62
  63 void
  64 test04()
  65 {
  66   // Disallow conversions from incompatible deleter
  67   std::unique_ptr<derived[], deleter<base_pointer>> p;
  68   std::unique_ptr<base[], deleter<base*>> upA;
  69   upA = std::move(p);  // { dg-error "no match" }
  70 }
  71
  72 // { dg-prune-output "include" }