gomp-20050608-branch/libstdc++-v3/testsuite/27_io/basic_stringbuf/seekoff/char/16956.cc

   1 // 2004-08-12  Paolo Carlini  <pcarlini@suse.de>
   2
   3 // Copyright (C) 2004 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 2, 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 COPYING.  If not, write to the Free
  18 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  19 // USA.
  20
  21 // 27.7.1.3 Overridden virtual functions
  22
  23 #include <sstream>
  24 #include <testsuite_hooks.h>
  25
  26 // libstdc++/16956
  27 void test01()
  28 {
  29   bool test __attribute__((unused)) = true;
  30   using namespace std;
  31
  32   typedef stringbuf::int_type int_type;
  33   typedef stringbuf::traits_type traits_type;
  34   typedef stringbuf::pos_type pos_type;
  35   typedef stringbuf::off_type off_type;
  36
  37   stringbuf strb_01("lara's place", ios_base::in);
  38   pos_type pt_1 = strb_01.pubseekoff(5, ios_base::cur, ios_base::in);
  39   int_type c1 = strb_01.sgetc();
  40   VERIFY( c1 != traits_type::eof() );
  41   pos_type pt_2 = strb_01.pubseekoff(2, ios_base::cur, ios_base::in);
  42   pos_type pt_3 = strb_01.pubseekpos(pt_1, ios_base::in);
  43   int_type c2 = strb_01.sbumpc();
  44   VERIFY( off_type(pt_3) == off_type(pt_2) - 2 );
  45   VERIFY( c2 == c1 );
  46
  47   stringbuf strb_02("-", ios_base::out);
  48   pos_type pt_4 = strb_02.pubseekoff(0, ios_base::cur, ios_base::out);
  49   strb_02.sputn("red", 3);
  50   pos_type pt_5 = strb_02.pubseekoff(-3, ios_base::cur, ios_base::out);
  51   strb_02.pubseekpos(pt_5, ios_base::out);
  52   VERIFY( off_type(pt_5) == off_type(pt_4) );
  53   strb_02.sputn("blu", 3);
  54   VERIFY( strb_02.str() == "blu" );
  55 }
  56
  57 int main()
  58 {
  59   test01();
  60   return 0;
  61 }