libstdc++-v3/testsuite/27_io/basic_filebuf/seekoff/char/12232.cc

   1 // Copyright (C) 2003 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 2, 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 COPYING.  If not, write to the Free
  16 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  17 // USA.
  18
  19 // 27.8.1.4 Overridden virtual functions
  20
  21 #include <fstream>
  22 #include <testsuite_hooks.h>
  23
  24 const char name[] = "tmp_12232";
  25
  26 // libstdc++/12232
  27 void test01()
  28 {
  29   using namespace std;
  30   bool test __attribute__((unused)) = true;
  31
  32   filebuf fbout;
  33   fbout.open(name, ios_base::out);
  34   fbout.sputn("abc", 3);
  35
  36   streampos p1 = fbout.pubseekoff(0, ios_base::cur, ios_base::in);
  37   VERIFY( p1 != streampos(-1) );
  38   fbout.sputn("de", 2);
  39
  40   streampos p2 = fbout.pubseekpos(p1, ios_base::openmode());
  41   VERIFY( p2 != streampos(-1) );
  42   fbout.sputn("34", 2);
  43
  44   streampos p3 = fbout.pubseekoff(0, ios_base::beg, ios_base::ate);
  45   VERIFY( p3 != streampos(-1) );
  46   fbout.sputn("012", 3);
  47
  48   fbout.close();
  49
  50   filebuf fbin;
  51   fbin.open(name, ios_base::in);
  52
  53   streampos p4 = fbin.pubseekoff(0, ios_base::beg, ios_base::ate);
  54   VERIFY( p4 != streampos(-1) );
  55   VERIFY( fbin.sgetc() == '0' );
  56
  57   streampos p5 = fbin.pubseekoff(-1, ios_base::end, ios_base::out);
  58   VERIFY( p5 != streampos(-1) );
  59   VERIFY( fbin.sbumpc() == '4' );
  60
  61   streampos p6 = fbin.pubseekpos(p4, ios_base::binary);
  62   VERIFY( p6 != streampos(-1) );
  63   VERIFY( fbin.sbumpc() == '0' );
  64
  65   fbin.close();
  66 }
  67
  68 int main()
  69 {
  70   void test01();
  71   return 0;
  72 }