1 //===----------------------------------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 // <ios> 10 11 // template <class charT, class traits> class basic_ios 12 13 // void clear(iostate state = goodbit); 14 15 #include <ios> 16 #include <streambuf> 17 #include <cassert> 18 19 #include "test_macros.h" 20 21 struct testbuf : public std::streambuf {}; 22 main(int,char **)23int main(int, char**) 24 { 25 { 26 std::ios ios(0); 27 ios.clear(); 28 assert(ios.rdstate() == std::ios::badbit); 29 #ifndef TEST_HAS_NO_EXCEPTIONS 30 try 31 { 32 ios.exceptions(std::ios::badbit); 33 assert(false); 34 } 35 catch (...) 36 { 37 } 38 try 39 { 40 ios.clear(); 41 assert(false); 42 } 43 catch (std::ios::failure&) 44 { 45 assert(ios.rdstate() == std::ios::badbit); 46 } 47 try 48 { 49 ios.clear(std::ios::eofbit); 50 assert(false); 51 } 52 catch (std::ios::failure&) 53 { 54 assert(ios.rdstate() == (std::ios::eofbit | std::ios::badbit)); 55 } 56 #endif 57 } 58 { 59 testbuf sb; 60 std::ios ios(&sb); 61 ios.clear(); 62 assert(ios.rdstate() == std::ios::goodbit); 63 ios.exceptions(std::ios::badbit); 64 ios.clear(); 65 assert(ios.rdstate() == std::ios::goodbit); 66 ios.clear(std::ios::eofbit); 67 assert(ios.rdstate() == std::ios::eofbit); 68 } 69 70 return 0; 71 } 72