libstdc++-v3/testsuite/27_io/basic_stringbuf/seekoff/wchar_t/16956.cc

   1 // 2004-08-12  Paolo Carlini  <pcarlini@suse.de>
   2
   3 // Copyright (C) 2004, 2009 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 3, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License along
  17 // with this library; see the file COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20 // 27.7.1.3 Overridden virtual functions
  21
  22 #include <sstream>
  23 #include <testsuite_hooks.h>
  24
  25 // libstdc++/16956
  26 void test01()
  27 {
  28   bool test __attribute__((unused)) = true;
  29   using namespace std;
  30
  31   typedef wstringbuf::int_type int_type;
  32   typedef wstringbuf::traits_type traits_type;
  33   typedef wstringbuf::pos_type pos_type;
  34   typedef wstringbuf::off_type off_type;
  35
  36   wstringbuf strb_01(L"lara's place", ios_base::in);
  37   pos_type pt_1 = strb_01.pubseekoff(5, ios_base::cur, ios_base::in);
  38   int_type c1 = strb_01.sgetc();
  39   VERIFY( c1 != traits_type::eof() );
  40   pos_type pt_2 = strb_01.pubseekoff(2, ios_base::cur, ios_base::in);
  41   pos_type pt_3 = strb_01.pubseekpos(pt_1, ios_base::in);
  42   int_type c2 = strb_01.sbumpc();
  43   VERIFY( off_type(pt_3) == off_type(pt_2) - 2 );
  44   VERIFY( c2 == c1 );
  45
  46   wstringbuf strb_02(L"-", ios_base::out);
  47   pos_type pt_4 = strb_02.pubseekoff(0, ios_base::cur, ios_base::out);
  48   strb_02.sputn(L"red", 3);
  49   pos_type pt_5 = strb_02.pubseekoff(-3, ios_base::cur, ios_base::out);
  50   strb_02.pubseekpos(pt_5, ios_base::out);
  51   VERIFY( off_type(pt_5) == off_type(pt_4) );
  52   strb_02.sputn(L"blu", 3);
  53   VERIFY( strb_02.str() == L"blu" );
  54 }
  55
  56 int main()
  57 {
  58   test01();
  59   return 0;
  60 }