overflow.pass.cpp revision b64f8b07c104c6cc986570ac8ee0ed16a9f23976
1bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant//===----------------------------------------------------------------------===// 2bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// 3f5256e16dfc425c1d466f6308d4026d529ce9e0bHoward Hinnant// The LLVM Compiler Infrastructure 4bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// 5b64f8b07c104c6cc986570ac8ee0ed16a9f23976Howard Hinnant// This file is dual licensed under the MIT and the University of Illinois Open 6b64f8b07c104c6cc986570ac8ee0ed16a9f23976Howard Hinnant// Source Licenses. See LICENSE.TXT for details. 7bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// 8bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant//===----------------------------------------------------------------------===// 9bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 10bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// <fstream> 11bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 12bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// int_type overflow(int_type c = traits::eof()); 13bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 14bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// This test is not entirely portable 15bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 16bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant#include <fstream> 17bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant#include <cassert> 18bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 19bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnanttemplate <class CharT> 20bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantstruct test_buf 21bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant : public std::basic_filebuf<CharT> 22bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant{ 23bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant typedef std::basic_filebuf<CharT> base; 24bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant typedef typename base::char_type char_type; 25bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant typedef typename base::int_type int_type; 26bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant typedef typename base::traits_type traits_type; 27bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 28bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant char_type* pbase() const {return base::pbase();} 29bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant char_type* pptr() const {return base::pptr();} 30bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant char_type* epptr() const {return base::epptr();} 31bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant void gbump(int n) {base::gbump(n);} 32bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 33bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant virtual int_type overflow(int_type c = traits_type::eof()) {return base::overflow(c);} 34bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant}; 35bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 36bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantint main() 37bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant{ 38bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant { 39bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant test_buf<char> f; 40bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.open("overflow.dat", std::ios_base::out) != 0); 41bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.is_open()); 42bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.pbase() == 0); 43bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.pptr() == 0); 44bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.epptr() == 0); 45bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.overflow('a') == 'a'); 46bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.pbase() != 0); 47bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.pptr() == f.pbase()); 48bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.epptr() - f.pbase() == 4095); 49bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant } 50bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant { 51bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant test_buf<char> f; 52bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.open("overflow.dat", std::ios_base::in) != 0); 53bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.is_open()); 54bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.sgetc() == 'a'); 55bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant } 56bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant std::remove("overflow.dat"); 57bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant { 58bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant test_buf<char> f; 59bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant f.pubsetbuf(0, 0); 60bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.open("overflow.dat", std::ios_base::out) != 0); 61bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.is_open()); 62bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.pbase() == 0); 63bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.pptr() == 0); 64bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.epptr() == 0); 65bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.overflow('a') == 'a'); 66bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.pbase() == 0); 67bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.pptr() == 0); 68bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.epptr() == 0); 69bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant } 70bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant { 71bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant test_buf<char> f; 72bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.open("overflow.dat", std::ios_base::in) != 0); 73bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.is_open()); 74bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.sgetc() == 'a'); 75bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant } 76bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant std::remove("overflow.dat"); 77bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant { 78bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant test_buf<wchar_t> f; 79bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.open("overflow.dat", std::ios_base::out) != 0); 80bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.is_open()); 81bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.pbase() == 0); 82bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.pptr() == 0); 83bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.epptr() == 0); 84bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.overflow(L'a') == L'a'); 85bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.pbase() != 0); 86bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.pptr() == f.pbase()); 87bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.epptr() - f.pbase() == 4095); 88bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant } 89bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant { 90bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant test_buf<wchar_t> f; 91bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.open("overflow.dat", std::ios_base::in) != 0); 92bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.is_open()); 93bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.sgetc() == L'a'); 94bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant } 95bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant std::remove("overflow.dat"); 96bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant { 97bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant test_buf<wchar_t> f; 98bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant f.pubsetbuf(0, 0); 99bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.open("overflow.dat", std::ios_base::out) != 0); 100bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.is_open()); 101bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.pbase() == 0); 102bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.pptr() == 0); 103bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.epptr() == 0); 104bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.overflow(L'a') == L'a'); 105bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.pbase() == 0); 106bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.pptr() == 0); 107bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.epptr() == 0); 108bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant } 109bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant { 110bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant test_buf<wchar_t> f; 111bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.open("overflow.dat", std::ios_base::in) != 0); 112bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.is_open()); 113bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.sgetc() == L'a'); 114bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant } 115bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant std::remove("overflow.dat"); 116bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant { 117bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant test_buf<wchar_t> f; 118bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant f.pubimbue(std::locale("en_US.UTF-8")); 119bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.open("overflow.dat", std::ios_base::out) != 0); 120bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.sputc(0x4E51) == 0x4E51); 121bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.sputc(0x4E52) == 0x4E52); 122bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.sputc(0x4E53) == 0x4E53); 123bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant } 124bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant { 125bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant test_buf<char> f; 126bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.open("overflow.dat", std::ios_base::in) != 0); 127bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.is_open()); 128bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.sbumpc() == 0xE4); 129bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.sbumpc() == 0xB9); 130bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.sbumpc() == 0x91); 131bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.sbumpc() == 0xE4); 132bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.sbumpc() == 0xB9); 133bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.sbumpc() == 0x92); 134bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.sbumpc() == 0xE4); 135bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.sbumpc() == 0xB9); 136bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.sbumpc() == 0x93); 137bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(f.sbumpc() == -1); 138bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant } 139bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant std::remove("overflow.dat"); 140256813f4e7915d64776a4edd5f4765d893b9f062Howard Hinnant} 141