1// { dg-require-fork "" } 2// { dg-require-mkfifo "" } 3 4// Copyright (C) 2001, 2002, 2003, 2005 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 2, 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 COPYING. If not, write to the Free 19// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 20// USA. 21 22// 27.8.1.3 filebuf member functions 23// @require@ %-*.tst %-*.txt 24// @diff@ %-*.tst %-*.txt 25 26// various tests for filebuf::open() and filebuf::close() including 27// the non-portable functionality in the libstdc++-v3 IO library 28 29#include <fstream> 30#include <iostream> 31#include <unistd.h> 32#include <signal.h> 33#include <fcntl.h> 34#include <sys/types.h> 35#include <sys/stat.h> 36#include <testsuite_hooks.h> 37 38// libstdc++/2913, libstdc++/4879 39// John Fardo <jfardo@laurelnetworks.com>, Brad Garcia <garsh@attbi.com> 40void 41test_04() 42{ 43 using namespace __gnu_test; 44 45 bool test __attribute__((unused)) = true; 46 const char* name = "tmp_fifo1"; 47 semaphore s1, s2; 48 49 signal(SIGPIPE, SIG_IGN); 50 51 unlink(name); 52 if (0 != mkfifo(name, S_IRWXU)) 53 { 54 std::cerr << "failed to create fifo" << std::endl; 55 exit(-1); 56 } 57 58 int fval = fork(); 59 if (fval == -1) 60 { 61 std::cerr << "failed to fork" << std::endl; 62 unlink(name); 63 exit(-1); 64 } 65 else if (fval == 0) 66 { 67 std::ifstream ifs(name); 68 s1.wait (); 69 ifs.close(); 70 s2.signal (); 71 exit(0); 72 } 73 74 std::ofstream ofs(name); 75 s1.signal (); 76 s2.wait (); 77 ofs.put('t'); 78 79 /* 80 * ISO/IED 14882:1998(E) 27.8.1.10.4 81 * 82 * void close(); 83 * 84 * Effects: Calls rdbuf()->close() and, if that function fails 85 * (returns a null pointer), calls setstate(failbit)... 86 */ 87 ofs.close(); 88 if (!(ofs.rdstate() & std::ios::failbit)) 89 { 90 test = false; 91 VERIFY( test ); 92 unlink(name); 93 exit(-1); 94 } 95 96 unlink(name); 97} 98 99int 100main() 101{ 102 test_04(); 103 return 0; 104} 105 106 107