libstdc++-v3/testsuite/23_containers/set/cons/noexcept_move_construct.cc

   1 // { dg-do compile { target c++11 } }
   2
   3 // 2011-06-01  Paolo Carlini  <paolo.carlini@oracle.com>
   4 //
   5 // Copyright (C) 2011-2025 Free Software Foundation, Inc.
   6 //
   7 // This file is part of the GNU ISO C++ Library.  This library is free
   8 // software; you can redistribute it and/or modify it under the
   9 // terms of the GNU General Public License as published by the
  10 // Free Software Foundation; either version 3, or (at your option)
  11 // any later version.
  12 //
  13 // This library is distributed in the hope that it will be useful,
  14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 // GNU General Public License for more details.
  17 //
  18 // You should have received a copy of the GNU General Public License along
  19 // with this library; see the file COPYING3.  If not see
  20 // <http://www.gnu.org/licenses/>.
  21
  22 #include <set>
  23
  24 typedef std::set<int> stype;
  25
  26 static_assert( std::is_nothrow_move_constructible<stype>::value,
  27                "noexcept move constructor" );
  28 static_assert( std::is_nothrow_constructible<stype,
  29                stype&&, const typename stype::allocator_type&>::value,
  30                "noexcept move constructor with allocator" );
  31
  32 template<typename Type>
  33   class not_noexcept_move_constructor_alloc : public std::allocator<Type>
  34   {
  35   public:
  36     not_noexcept_move_constructor_alloc() noexcept { }
  37
  38     not_noexcept_move_constructor_alloc(
  39         const not_noexcept_move_constructor_alloc& x) noexcept
  40     : std::allocator<Type>(x)
  41     { }
  42
  43     not_noexcept_move_constructor_alloc(
  44         not_noexcept_move_constructor_alloc&& x) noexcept(false)
  45     : std::allocator<Type>(std::move(x))
  46     { }
  47
  48     template<typename _Tp1>
  49       struct rebind
  50       { typedef not_noexcept_move_constructor_alloc<_Tp1> other; };
  51   };
  52
  53 typedef std::set<int, std::less<int>,
  54                  not_noexcept_move_constructor_alloc<int>> astype;
  55
  56 static_assert( std::is_nothrow_move_constructible<astype>::value,
  57                "noexcept move constructor with not noexcept alloc" );
  58
  59 struct not_noexcept_less
  60 {
  61   not_noexcept_less() = default;
  62   not_noexcept_less(const not_noexcept_less&) /* noexcept */
  63   { }
  64
  65   bool
  66   operator()(int l, int r) const
  67   { return l < r; }
  68 };
  69
  70 typedef std::set<int, not_noexcept_less> estype;
  71
  72 static_assert( !std::is_nothrow_move_constructible<estype>::value,
  73                "not noexcept move constructor with not noexcept less" );
  74
  75 static_assert( !std::is_nothrow_constructible<estype, estype&&,
  76                const typename estype::allocator_type&>::value,
  77                "not noexcept move constructor with allocator" );