f5256e16df
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@103516 91177308-0d34-0410-b5e6-96231b3b80d8
53 lines
1.5 KiB
C++
53 lines
1.5 KiB
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// <fstream>
|
|
|
|
// template <class charT, class traits = char_traits<charT> >
|
|
// class basic_filebuf
|
|
|
|
// void swap(basic_filebuf& rhs);
|
|
|
|
#include <fstream>
|
|
#include <cassert>
|
|
|
|
int main()
|
|
{
|
|
{
|
|
std::filebuf f;
|
|
assert(f.open("test.dat", std::ios_base::out | std::ios_base::in
|
|
| std::ios_base::trunc) != 0);
|
|
assert(f.is_open());
|
|
assert(f.sputn("123", 3) == 3);
|
|
f.pubseekoff(1, std::ios_base::beg);
|
|
assert(f.sgetc() == '2');
|
|
std::filebuf f2;
|
|
f2.swap(f);
|
|
assert(!f.is_open());
|
|
assert(f2.is_open());
|
|
assert(f2.sgetc() == '2');
|
|
}
|
|
remove("test.dat");
|
|
{
|
|
std::wfilebuf f;
|
|
assert(f.open("test.dat", std::ios_base::out | std::ios_base::in
|
|
| std::ios_base::trunc) != 0);
|
|
assert(f.is_open());
|
|
assert(f.sputn(L"123", 3) == 3);
|
|
f.pubseekoff(1, std::ios_base::beg);
|
|
assert(f.sgetc() == L'2');
|
|
std::wfilebuf f2;
|
|
f2.swap(f);
|
|
assert(!f.is_open());
|
|
assert(f2.is_open());
|
|
assert(f2.sgetc() == L'2');
|
|
}
|
|
remove("test.dat");
|
|
}
|