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 10c79549b70e66c251c15dd145c964edb70fa2e2b3Dan Albert// XFAIL: with_system_cxx_lib=macosx10.7 11c79549b70e66c251c15dd145c964edb70fa2e2b3Dan Albert 12bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// <istream> 13bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 14bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// basic_istream<charT,traits>& get(char_type& c); 15bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 16bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant#include <istream> 17bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant#include <cassert> 18bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 19bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnanttemplate <class CharT> 20bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantstruct testbuf 21bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant : public std::basic_streambuf<CharT> 22bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant{ 23bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant typedef std::basic_string<CharT> string_type; 24bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant typedef std::basic_streambuf<CharT> base; 25bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantprivate: 26bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant string_type str_; 27bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantpublic: 28bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 29bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant testbuf() {} 30bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant testbuf(const string_type& str) 31bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant : str_(str) 32bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant { 33bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant base::setg(const_cast<CharT*>(str_.data()), 34bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant const_cast<CharT*>(str_.data()), 35bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant const_cast<CharT*>(str_.data()) + str_.size()); 36bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant } 37bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 38bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant CharT* eback() const {return base::eback();} 39bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant CharT* gptr() const {return base::gptr();} 40bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant CharT* egptr() const {return base::egptr();} 41bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant}; 42bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 43bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantint main() 44bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant{ 45bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant { 46bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant testbuf<char> sb(" "); 47bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant std::istream is(&sb); 48bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant char c; 49bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant is.get(c); 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; 59bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant is.get(c); 60bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(!is.eof()); 61bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(!is.fail()); 62bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(c == ' '); 63bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(is.gcount() == 1); 64bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant is.get(c); 65bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(!is.eof()); 66bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(!is.fail()); 67bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(c == 'a'); 68bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(is.gcount() == 1); 69bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant is.get(c); 70bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(!is.eof()); 71bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(!is.fail()); 72bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(c == 'b'); 73bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(is.gcount() == 1); 74bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant is.get(c); 7592a836c03d9e2aa0f6eb24b41221c9f24d570178Howard Hinnant assert(!is.eof()); 76bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(!is.fail()); 77bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(c == 'c'); 78bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(is.gcount() == 1); 79bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant } 80bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant { 81bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant testbuf<wchar_t> sb(L" abc"); 82bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant std::wistream is(&sb); 83bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant wchar_t c; 84bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant is.get(c); 85bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(!is.eof()); 86bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(!is.fail()); 87bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(c == L' '); 88bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(is.gcount() == 1); 89bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant is.get(c); 90bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(!is.eof()); 91bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(!is.fail()); 92bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(c == L'a'); 93bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(is.gcount() == 1); 94bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant is.get(c); 95bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(!is.eof()); 96bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(!is.fail()); 97bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(c == L'b'); 98bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(is.gcount() == 1); 99bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant is.get(c); 10092a836c03d9e2aa0f6eb24b41221c9f24d570178Howard Hinnant assert(!is.eof()); 101bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(!is.fail()); 102bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(c == L'c'); 103bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(is.gcount() == 1); 104bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant } 105bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant} 106