1// Copyright (C) 2003-2015 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// 27.8.1.4 Overridden virtual functions 19 20// { dg-require-fileio "" } 21 22#include <locale> 23#include <fstream> 24#include <testsuite_hooks.h> 25#include <testsuite_character.h> 26 27// libstdc++/12790 28void test01() 29{ 30 using namespace std; 31 using __gnu_test::pod_uchar; 32 typedef basic_filebuf<pod_uchar>::traits_type traits_type; 33 34 bool test __attribute__((unused)) = true; 35 const char* name = "tmp_seekoff_12790"; 36 37 locale loc(locale::classic(), 38 new codecvt<traits_type::char_type, char, 39 traits_type::state_type>); 40 41 basic_filebuf<pod_uchar> fb; 42 fb.pubimbue(loc); 43 44 fb.open(name, ios_base::out); 45 fb.sputc(pod_uchar::from<char>(0xff)); 46 fb.sputc(pod_uchar::from<char>(0)); 47 fb.sputc(pod_uchar::from<char>(0)); 48 fb.sputc(pod_uchar::from<char>('a')); 49 fb.sputc(pod_uchar::from<char>('a')); 50 fb.sputc(pod_uchar::from<char>('a')); 51 fb.sputc(pod_uchar::from<char>('a')); 52 fb.close(); 53 54 fb.open(name, ios_base::in); 55 fb.sbumpc(); 56 fb.sbumpc(); 57 fb.sbumpc(); 58 59 // Check that seekoff resets the state when seeking to beginning. 60 traits_type::pos_type pos = fb.pubseekoff(0, ios_base::beg); 61 VERIFY( pos != traits_type::pos_type(traits_type::off_type(-1)) ); 62 63 traits_type::int_type c = fb.sbumpc(); 64 VERIFY( c != traits_type::eof() ); 65 VERIFY( traits_type::eq(traits_type::to_char_type(c), 66 pod_uchar::from<char>(0xff)) ); 67 fb.sbumpc(); 68 fb.sbumpc(); 69 fb.sbumpc(); 70 fb.sbumpc(); 71 fb.sbumpc(); 72 c = fb.sbumpc(); 73 VERIFY( c != traits_type::eof() ); 74 VERIFY( traits_type::eq(traits_type::to_char_type(c), 75 pod_uchar::from<char>('a')) ); 76 c = fb.sbumpc(); 77 VERIFY( c == traits_type::eof() ); 78 79 fb.close(); 80} 81 82int main() 83{ 84 test01(); 85 return 0; 86} 87