b64f8b07c1
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@119395 91177308-0d34-0410-b5e6-96231b3b80d8
70 lines
2.0 KiB
C++
70 lines
2.0 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.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// <fstream>
|
|
|
|
// template <class charT, class traits = char_traits<charT> >
|
|
// class basic_fstream
|
|
|
|
// template <class charT, class traits>
|
|
// void swap(basic_fstream<charT, traits>& x, basic_fstream<charT, traits>& y);
|
|
|
|
#include <fstream>
|
|
#include <cassert>
|
|
|
|
int main()
|
|
{
|
|
{
|
|
std::fstream fs1("test1.dat", std::ios_base::in | std::ios_base::out
|
|
| std::ios_base::trunc);
|
|
std::fstream fs2("test2.dat", std::ios_base::in | std::ios_base::out
|
|
| std::ios_base::trunc);
|
|
fs1 << 1 << ' ' << 2;
|
|
fs2 << 2 << ' ' << 1;
|
|
fs1.seekg(0);
|
|
swap(fs1, fs2);
|
|
fs1.seekg(0);
|
|
int i;
|
|
fs1 >> i;
|
|
assert(i == 2);
|
|
fs1 >> i;
|
|
assert(i == 1);
|
|
i = 0;
|
|
fs2 >> i;
|
|
assert(i == 1);
|
|
fs2 >> i;
|
|
assert(i == 2);
|
|
}
|
|
std::remove("test1.dat");
|
|
std::remove("test2.dat");
|
|
{
|
|
std::wfstream fs1("test1.dat", std::ios_base::in | std::ios_base::out
|
|
| std::ios_base::trunc);
|
|
std::wfstream fs2("test2.dat", std::ios_base::in | std::ios_base::out
|
|
| std::ios_base::trunc);
|
|
fs1 << 1 << ' ' << 2;
|
|
fs2 << 2 << ' ' << 1;
|
|
fs1.seekg(0);
|
|
swap(fs1, fs2);
|
|
fs1.seekg(0);
|
|
int i;
|
|
fs1 >> i;
|
|
assert(i == 2);
|
|
fs1 >> i;
|
|
assert(i == 1);
|
|
i = 0;
|
|
fs2 >> i;
|
|
assert(i == 1);
|
|
fs2 >> i;
|
|
assert(i == 2);
|
|
}
|
|
std::remove("test1.dat");
|
|
std::remove("test2.dat");
|
|
}
|