1// { dg-require-fork "" } 2// { dg-require-mkfifo "" } 3 4// Copyright (C) 2001-2015 Free Software Foundation, Inc. 5// 6// This file is part of the GNU ISO C++ Library. This library is free 7// software; you can redistribute it and/or modify it under the 8// terms of the GNU General Public License as published by the 9// Free Software Foundation; either version 3, or (at your option) 10// any later version. 11 12// This library is distributed in the hope that it will be useful, 13// but WITHOUT ANY WARRANTY; without even the implied warranty of 14// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15// GNU General Public License for more details. 16 17// You should have received a copy of the GNU General Public License along 18// with this library; see the file COPYING3. If not see 19// <http://www.gnu.org/licenses/>. 20 21// 27.8.1.3 filebuf member functions 22// @require@ %-*.tst %-*.txt 23// @diff@ %-*.tst %-*.txt 24 25// various tests for filebuf::open() and filebuf::close() including 26// the non-portable functionality in the libstdc++-v3 IO library 27 28#include <fstream> 29#include <iostream> 30#include <cstdlib> 31#include <unistd.h> 32#include <signal.h> 33#include <fcntl.h> 34#include <sys/types.h> 35#include <sys/stat.h> 36 37// No asserts, avoid leaking the semaphores if a VERIFY fails. 38#undef _GLIBCXX_ASSERT 39 40#include <testsuite_hooks.h> 41 42// libstdc++/2913, libstdc++/4879 43// John Fardo <jfardo@laurelnetworks.com>, Brad Garcia <garsh@attbi.com> 44bool 45test_04() 46{ 47 using namespace __gnu_test; 48 49 bool test __attribute__((unused)) = true; 50 const char* name = "tmp_fifo1"; 51 semaphore s1, s2; 52 53 signal(SIGPIPE, SIG_IGN); 54 55 unlink(name); 56 if (0 != mkfifo(name, S_IRWXU)) 57 { 58 std::cerr << "failed to create fifo" << std::endl; 59 exit(-1); 60 } 61 62 int fval = fork(); 63 if (fval == -1) 64 { 65 std::cerr << "failed to fork" << std::endl; 66 unlink(name); 67 return false; 68 } 69 else if (fval == 0) 70 { 71 std::ifstream ifs(name); 72 s1.wait(); 73 ifs.close(); 74 s2.signal(); 75 exit(0); 76 } 77 78 std::ofstream ofs(name); 79 s1.signal(); 80 s2.wait(); 81 ofs.put('t'); 82 83 /* 84 * ISO/IED 14882:1998(E) 27.8.1.10.4 85 * 86 * void close(); 87 * 88 * Effects: Calls rdbuf()->close() and, if that function fails 89 * (returns a null pointer), calls setstate(failbit)... 90 */ 91 ofs.close(); 92 if (!(ofs.rdstate() & std::ios::failbit)) 93 { 94 test = false; 95 VERIFY( test ); 96 } 97 98 unlink(name); 99 100 return test; 101} 102 103int 104main() 105{ 106 return !test_04(); 107} 108