c0d0cbad9e
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@141003 91177308-0d34-0410-b5e6-96231b3b80d8
143 lines
4.2 KiB
C++
143 lines
4.2 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>
|
|
|
|
// int_type overflow(int_type c = traits::eof());
|
|
|
|
// This test is not entirely portable
|
|
|
|
#include <fstream>
|
|
#include <cassert>
|
|
|
|
#include "../../../../platform_support.h" // locale name macros
|
|
|
|
template <class CharT>
|
|
struct test_buf
|
|
: public std::basic_filebuf<CharT>
|
|
{
|
|
typedef std::basic_filebuf<CharT> base;
|
|
typedef typename base::char_type char_type;
|
|
typedef typename base::int_type int_type;
|
|
typedef typename base::traits_type traits_type;
|
|
|
|
char_type* pbase() const {return base::pbase();}
|
|
char_type* pptr() const {return base::pptr();}
|
|
char_type* epptr() const {return base::epptr();}
|
|
void gbump(int n) {base::gbump(n);}
|
|
|
|
virtual int_type overflow(int_type c = traits_type::eof()) {return base::overflow(c);}
|
|
};
|
|
|
|
int main()
|
|
{
|
|
{
|
|
test_buf<char> f;
|
|
assert(f.open("overflow.dat", std::ios_base::out) != 0);
|
|
assert(f.is_open());
|
|
assert(f.pbase() == 0);
|
|
assert(f.pptr() == 0);
|
|
assert(f.epptr() == 0);
|
|
assert(f.overflow('a') == 'a');
|
|
assert(f.pbase() != 0);
|
|
assert(f.pptr() == f.pbase());
|
|
assert(f.epptr() - f.pbase() == 4095);
|
|
}
|
|
{
|
|
test_buf<char> f;
|
|
assert(f.open("overflow.dat", std::ios_base::in) != 0);
|
|
assert(f.is_open());
|
|
assert(f.sgetc() == 'a');
|
|
}
|
|
std::remove("overflow.dat");
|
|
{
|
|
test_buf<char> f;
|
|
f.pubsetbuf(0, 0);
|
|
assert(f.open("overflow.dat", std::ios_base::out) != 0);
|
|
assert(f.is_open());
|
|
assert(f.pbase() == 0);
|
|
assert(f.pptr() == 0);
|
|
assert(f.epptr() == 0);
|
|
assert(f.overflow('a') == 'a');
|
|
assert(f.pbase() == 0);
|
|
assert(f.pptr() == 0);
|
|
assert(f.epptr() == 0);
|
|
}
|
|
{
|
|
test_buf<char> f;
|
|
assert(f.open("overflow.dat", std::ios_base::in) != 0);
|
|
assert(f.is_open());
|
|
assert(f.sgetc() == 'a');
|
|
}
|
|
std::remove("overflow.dat");
|
|
{
|
|
test_buf<wchar_t> f;
|
|
assert(f.open("overflow.dat", std::ios_base::out) != 0);
|
|
assert(f.is_open());
|
|
assert(f.pbase() == 0);
|
|
assert(f.pptr() == 0);
|
|
assert(f.epptr() == 0);
|
|
assert(f.overflow(L'a') == L'a');
|
|
assert(f.pbase() != 0);
|
|
assert(f.pptr() == f.pbase());
|
|
assert(f.epptr() - f.pbase() == 4095);
|
|
}
|
|
{
|
|
test_buf<wchar_t> f;
|
|
assert(f.open("overflow.dat", std::ios_base::in) != 0);
|
|
assert(f.is_open());
|
|
assert(f.sgetc() == L'a');
|
|
}
|
|
std::remove("overflow.dat");
|
|
{
|
|
test_buf<wchar_t> f;
|
|
f.pubsetbuf(0, 0);
|
|
assert(f.open("overflow.dat", std::ios_base::out) != 0);
|
|
assert(f.is_open());
|
|
assert(f.pbase() == 0);
|
|
assert(f.pptr() == 0);
|
|
assert(f.epptr() == 0);
|
|
assert(f.overflow(L'a') == L'a');
|
|
assert(f.pbase() == 0);
|
|
assert(f.pptr() == 0);
|
|
assert(f.epptr() == 0);
|
|
}
|
|
{
|
|
test_buf<wchar_t> f;
|
|
assert(f.open("overflow.dat", std::ios_base::in) != 0);
|
|
assert(f.is_open());
|
|
assert(f.sgetc() == L'a');
|
|
}
|
|
std::remove("overflow.dat");
|
|
{
|
|
test_buf<wchar_t> f;
|
|
f.pubimbue(std::locale(LOCALE_en_US_UTF_8));
|
|
assert(f.open("overflow.dat", std::ios_base::out) != 0);
|
|
assert(f.sputc(0x4E51) == 0x4E51);
|
|
assert(f.sputc(0x4E52) == 0x4E52);
|
|
assert(f.sputc(0x4E53) == 0x4E53);
|
|
}
|
|
{
|
|
test_buf<char> f;
|
|
assert(f.open("overflow.dat", std::ios_base::in) != 0);
|
|
assert(f.is_open());
|
|
assert(f.sbumpc() == 0xE4);
|
|
assert(f.sbumpc() == 0xB9);
|
|
assert(f.sbumpc() == 0x91);
|
|
assert(f.sbumpc() == 0xE4);
|
|
assert(f.sbumpc() == 0xB9);
|
|
assert(f.sbumpc() == 0x92);
|
|
assert(f.sbumpc() == 0xE4);
|
|
assert(f.sbumpc() == 0xB9);
|
|
assert(f.sbumpc() == 0x93);
|
|
assert(f.sbumpc() == -1);
|
|
}
|
|
std::remove("overflow.dat");
|
|
}
|