libstdc++-v3/testsuite/ext/stdio_filebuf/char/10063-1.cc

   1 // Copyright (C) 2000, 2001, 2002, 2003 Free Software Foundation
   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 #include <cstdio>
  20 #include <fstream>
  21 #include <ext/stdio_filebuf.h>
  22 #include <testsuite_hooks.h>
  23
  24 void test1()
  25 {
  26   using namespace std;
  27   bool test __attribute__((unused)) = true;
  28
  29   FILE* file = fopen("tmp_10063-1", "w");
  30   putc('0', file);
  31   putc('1', file);
  32   {
  33     __gnu_cxx::stdio_filebuf<char> sbuf(file, ios_base::out);
  34     sbuf.sputc('2');
  35     sbuf.sputc('3');
  36   }
  37   putc('4', file);
  38   fclose(file);
  39
  40   filebuf fbuf;
  41   fbuf.open("tmp_10063-1", ios_base::in);
  42   char buf[10];
  43   streamsize n = fbuf.sgetn(buf, sizeof(buf));
  44   fbuf.close();
  45
  46   VERIFY(n == 5);
  47   VERIFY(!memcmp(buf, "01234", 5));
  48 }
  49
  50 int main()
  51 {
  52   test1();
  53   return 0;
  54 }