4684ddb6aa
- import libcxx - reduce targets to the one when compiled as a tools Change-Id: Iabb8427f80ff8e89463559a28bcb8b4f2bdbc496
54 lines
1.3 KiB
C++
54 lines
1.3 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.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// <string>
|
|
|
|
// void swap(basic_string& c)
|
|
// noexcept(!allocator_type::propagate_on_container_swap::value ||
|
|
// __is_nothrow_swappable<allocator_type>::value);
|
|
|
|
// This tests a conforming extension
|
|
|
|
#include <string>
|
|
#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::string C;
|
|
C c1, c2;
|
|
static_assert(noexcept(swap(c1, c2)), "");
|
|
}
|
|
{
|
|
typedef std::basic_string<char, std::char_traits<char>, test_allocator<char>> C;
|
|
C c1, c2;
|
|
static_assert(noexcept(swap(c1, c2)), "");
|
|
}
|
|
{
|
|
typedef std::basic_string<char, std::char_traits<char>, some_alloc<char>> C;
|
|
C c1, c2;
|
|
static_assert(!noexcept(swap(c1, c2)), "");
|
|
}
|
|
#endif
|
|
}
|