gomp-20050608-branch/libstdc++-v3/testsuite/27_io/basic_filebuf/setbuf/char/12875-2.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, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  17 // USA.
  18
  19 // 27.8.1.4 Overridden virtual functions
  20
  21 #include <fstream>
  22 #include <cstdio>
  23 #include <cstring>
  24 #include <testsuite_hooks.h>
  25
  26 // libstdc++/12875
  27 void test02()
  28 {
  29   using namespace std;
  30   bool test __attribute__((unused)) = true;
  31
  32   const char* name = "tmp_setbuf5";
  33   static char buf[1024];
  34
  35   filebuf out;
  36   out.open(name, ios_base::out);
  37   streamsize r = out.sputn("Hello,", 6);
  38   VERIFY( r == 6 );
  39   out.pubsetbuf(buf, 1024);
  40   r = out.sputn(" world", 6);
  41   VERIFY( r == 6 );
  42   VERIFY( out.close() );
  43
  44   FILE* in = fopen(name, "r");
  45   char str[256];
  46   fgets(str, 256, in);
  47   VERIFY( !strcmp(str, "Hello, world") );
  48   fclose(in);
  49 }
  50
  51 int main()
  52 {
  53   test02();
  54   return 0;
  55 }