1//===----------------------------------------------------------------------===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is dual licensed under the MIT and the University of Illinois Open 6// Source Licenses. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9 10// <ios> 11 12// template <class charT, class traits> class basic_ios 13 14// bool fail() const; 15 16#include <ios> 17#include <streambuf> 18#include <cassert> 19 20struct testbuf : public std::streambuf {}; 21 22int main() 23{ 24 { 25 std::ios ios(0); 26 assert(ios.fail()); 27 ios.setstate(std::ios::eofbit); 28 assert(ios.fail()); 29 } 30 { 31 testbuf sb; 32 std::ios ios(&sb); 33 assert(!ios.fail()); 34 ios.setstate(std::ios::eofbit); 35 assert(!ios.fail()); 36 ios.setstate(std::ios::badbit); 37 assert(ios.fail()); 38 ios.setstate(std::ios::failbit); 39 assert(ios.fail()); 40 } 41} 42