1// Copyright (C) 2001-2015 Free Software Foundation, Inc. 2// 3// This file is part of the GNU ISO C++ Library. This library is free 4// software; you can redistribute it and/or modify it under the 5// terms of the GNU General Public License as published by the 6// Free Software Foundation; either version 3, or (at your option) 7// any later version. 8 9// This library is distributed in the hope that it will be useful, 10// but WITHOUT ANY WARRANTY; without even the implied warranty of 11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12// GNU General Public License for more details. 13 14// You should have received a copy of the GNU General Public License along 15// with this library; see the file COPYING3. If not see 16// <http://www.gnu.org/licenses/>. 17 18// { dg-require-fileio "" } 19 20// 27.8.1.3 filebuf member functions 21// @require@ %-*.tst %-*.txt 22// @diff@ %-*.tst %-*.txt 23 24// various tests for filebuf::open() and filebuf::close() including 25// the non-portable functionality in the libstdc++-v3 IO library 26 27#include <fstream> 28#include <ext/stdio_filebuf.h> 29#include <testsuite_hooks.h> 30 31// Verify that std::filebuf doesn't close files that it didn't open 32// when using the following std::filebuf ctor: 33// 34// std::filebuf(__c_file_type* __f, 35// ios_base::openmode __mode, 36// int_type __s); 37// 38// Thanks to "George T. Talbot" <george@moberg.com> for uncovering 39// this bug/situation. 40 41const char name_01[] = "filebuf_virtuals-1.txt"; // file with data in it 42const char name_02[] = "filebuf_virtuals-2.txt"; // empty file, need to create 43 44void test_02() 45{ 46 bool test __attribute__((unused)) = true; 47 int close_num = 0; 48 49 // read (ext) 50 FILE* f2 = fopen(name_01, "r"); 51 VERIFY( f2 ); 52 if (f2) 53 { 54 __gnu_cxx::stdio_filebuf<char> fb(f2, std::ios_base::in, 512); 55 close_num = fclose(f2); 56 } 57 VERIFY( close_num == 0 ); 58 59 // read (standard) 60 FILE* f = fopen(name_01, "r"); 61 VERIFY( f ); 62 if (f) 63 { 64 std::ifstream ifstream1(name_01); 65 VERIFY( ifstream1.is_open() ); 66 std::ios_base::iostate st01 = ifstream1.rdstate(); 67 VERIFY( st01 == std::ios_base::goodbit ); 68 close_num = fclose(f); 69 } 70 VERIFY( close_num == 0 ); 71} 72 73int 74main() 75{ 76 test_02(); 77 return 0; 78} 79 80 81