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// Copyright (C) 2016-2022 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
// { dg-do run { target c++11 } }
#include <string>
#include <testsuite_hooks.h>
template<typename T>
struct mv_allocator
{
using value_type = T;
using size_type = unsigned;
mv_allocator()
: moved_to(false), moved_from(false) { }
template<typename U>
mv_allocator(const mv_allocator<U> & a)
: moved_to(a.moved_to), moved_from(a.moved_from) { }
mv_allocator(const mv_allocator &) = default;
mv_allocator(mv_allocator && a) noexcept : moved_to(true)
{
a.moved_from = true;
}
T* allocate(unsigned n) { return std::allocator<T>{}.allocate(n); }
void deallocate(T* p, unsigned n) { std::allocator<T>{}.deallocate(p, n); }
bool moved_to;
bool moved_from;
#if ! _GLIBCXX_USE_CXX11_ABI
// COW string doesn't use allocator_traits, requires C++03 allocator API.
using pointer = T*;
using const_pointer = const T*;
using difference_type = int;
template<typename U> struct rebind { using other = mv_allocator<U>; };
void construct(pointer p, const T& val) { ::new(p) T(val); }
void destroy(pointer p) { p->~T(); }
size_type max_size() const { return std::allocator<T>().max_size(); }
#endif
};
template<typename T, typename U>
bool
operator==(const mv_allocator<T>&, const mv_allocator<U>&) { return true; }
template<typename T, typename U>
bool
operator!=(const mv_allocator<T>&, const mv_allocator<U>&) { return false; }
void
test01()
{
std::basic_string<char, std::char_traits<char>, mv_allocator<char>> s;
auto t = std::move(s);
VERIFY( s.get_allocator().moved_from );
VERIFY( t.get_allocator().moved_to );
}
int
main()
{
test01();
}
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