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//===----------------------------------------------------------------------===// 9aac8dd83317151da747c86e786df34e80872bf0cDaniel Dunbar// 10aac8dd83317151da747c86e786df34e80872bf0cDaniel Dunbar// XFAIL: with_system_lib=x86_64-apple-darwin11 11641d3d8b4c05fd2cff6ea348729d670f59a114a2Howard Hinnant// XFAIL: with_system_lib=x86_64-apple-darwin12 12bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 13bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// <istream> 14bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 15bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// int_type get(); 16bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 17bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant#include <istream> 18bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant#include <cassert> 19bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 20bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnanttemplate <class CharT> 21bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantstruct testbuf 22bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant : public std::basic_streambuf<CharT> 23bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant{ 24bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant typedef std::basic_string<CharT> string_type; 25bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant typedef std::basic_streambuf<CharT> base; 26bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantprivate: 27bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant string_type str_; 28bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantpublic: 29bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 30bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant testbuf() {} 31bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant testbuf(const string_type& str) 32bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant : str_(str) 33bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant { 34bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant base::setg(const_cast<CharT*>(str_.data()), 35bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant const_cast<CharT*>(str_.data()), 36bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant const_cast<CharT*>(str_.data()) + str_.size()); 37bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant } 38bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 39bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant CharT* eback() const {return base::eback();} 40bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant CharT* gptr() const {return base::gptr();} 41bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant CharT* egptr() const {return base::egptr();} 42bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant}; 43bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 44bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantint main() 45bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant{ 46bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant { 47bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant testbuf<char> sb(" "); 48bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant std::istream is(&sb); 49bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant char c = is.get(); 50bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(!is.eof()); 51bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(!is.fail()); 52bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(c == ' '); 53bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(is.gcount() == 1); 54bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant } 55bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant { 56bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant testbuf<char> sb(" abc"); 57bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant std::istream is(&sb); 58bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant char c = is.get(); 59bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(!is.eof()); 60bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(!is.fail()); 61bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(c == ' '); 62bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(is.gcount() == 1); 63bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant c = is.get(); 64bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(!is.eof()); 65bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(!is.fail()); 66bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(c == 'a'); 67bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(is.gcount() == 1); 68bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant c = is.get(); 69bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(!is.eof()); 70bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(!is.fail()); 71bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(c == 'b'); 72bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(is.gcount() == 1); 73bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant c = is.get(); 7492a836c03d9e2aa0f6eb24b41221c9f24d570178Howard Hinnant assert(!is.eof()); 75bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(!is.fail()); 76bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(c == 'c'); 77bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(is.gcount() == 1); 78bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant } 79bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant { 80bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant testbuf<wchar_t> sb(L" abc"); 81bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant std::wistream is(&sb); 82bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant wchar_t c = is.get(); 83bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(!is.eof()); 84bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(!is.fail()); 85bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(c == L' '); 86bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(is.gcount() == 1); 87bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant c = is.get(); 88bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(!is.eof()); 89bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(!is.fail()); 90bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(c == L'a'); 91bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(is.gcount() == 1); 92bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant c = is.get(); 93bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(!is.eof()); 94bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(!is.fail()); 95bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(c == L'b'); 96bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(is.gcount() == 1); 97bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant c = is.get(); 9892a836c03d9e2aa0f6eb24b41221c9f24d570178Howard Hinnant assert(!is.eof()); 99bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(!is.fail()); 100bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(c == L'c'); 101bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(is.gcount() == 1); 102bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant } 103bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant} 104