libstdc++-v3/testsuite/std/concepts/concepts.lang/concept.copyconstructible/1.cc

   1 // Copyright (C) 2019-2023 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 // { dg-options "-std=gnu++2a" }
  19 // { dg-do compile { target c++2a } }
  20
  21 #include <concepts>
  22
  23 static_assert( !std::copy_constructible<void> );
  24 static_assert( std::copy_constructible<void*> );
  25 static_assert( std::copy_constructible<const void*> );
  26 static_assert( std::copy_constructible<char> );
  27 static_assert( std::copy_constructible<const float> );
  28 static_assert( std::copy_constructible<int*> );
  29 static_assert( std::copy_constructible<int&> );
  30 static_assert( !std::copy_constructible<int&&> );
  31 static_assert( std::copy_constructible<const int&> );
  32 static_assert( !std::copy_constructible<int[]> );
  33 static_assert( !std::copy_constructible<int[2]> );
  34 static_assert( !std::copy_constructible<int()> );
  35 static_assert( std::copy_constructible<int(*)()> );
  36 static_assert( std::copy_constructible<int(&)()> );
  37 static_assert( std::copy_constructible<int(&)() noexcept> );
  38
  39 enum E { };
  40 static_assert( std::copy_constructible<E> );
  41 enum class CE { };
  42 static_assert( std::copy_constructible<CE> );
  43 struct A { };
  44 static_assert( std::copy_constructible<A> );
  45 union B { };
  46 static_assert( std::copy_constructible<B> );
  47
  48 struct C
  49 {
  50   C(void* = nullptr) { }
  51   ~C() noexcept(false) { }
  52 };
  53 static_assert( !std::copy_constructible<C> );
  54
  55 class D
  56 {
  57 public:
  58   D() { }
  59   D(int) { }
  60 private:
  61   ~D() { }
  62 };
  63 static_assert( !std::copy_constructible<D> );