cxx/test/containers/sequences/vector.bool/swap_noexcept.pass.cpp

60 lines
1.4 KiB
C++

//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// <vector>
// void swap(vector& c)
// noexcept(!allocator_type::propagate_on_container_swap::value ||
// __is_nothrow_swappable<allocator_type>::value);
// This tests a conforming extension
#include <vector>
#include <cassert>
#include "../../test_allocator.h"
template <class T>
struct some_alloc
{
typedef T value_type;
some_alloc() {}
some_alloc(const some_alloc&);
void deallocate(void*, unsigned) {}
typedef std::true_type propagate_on_container_swap;
};
int main()
{
#if __has_feature(cxx_noexcept)
{
typedef std::vector<bool> C;
C c1, c2;
static_assert(noexcept(swap(c1, c2)), "");
}
{
typedef std::vector<bool, test_allocator<bool>> C;
C c1, c2;
static_assert(noexcept(swap(c1, c2)), "");
}
{
typedef std::vector<bool, other_allocator<bool>> C;
C c1, c2;
static_assert(noexcept(swap(c1, c2)), "");
}
{
typedef std::vector<bool, some_alloc<bool>> C;
C c1, c2;
static_assert(!noexcept(swap(c1, c2)), "");
}
#endif
}