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

   1 // Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
   2 // Free Software Foundation
   3 //
   4 // This file is part of the GNU ISO C++ Library.  This library is free
   5 // software; you can redistribute it and/or modify it under the
   6 // terms of the GNU General Public License as published by the
   7 // Free Software Foundation; either version 2, or (at your option)
   8 // any later version.
   9
  10 // This library is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 // GNU General Public License for more details.
  14
  15 // You should have received a copy of the GNU General Public License along
  16 // with this library; see the file COPYING.  If not, write to the Free
  17 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  18 // USA.
  19
  20 // { dg-require-fileio "" }
  21
  22 #include <cstdio>
  23 #include <fstream>
  24 #include <cstring>
  25 #include <ext/stdio_filebuf.h>
  26 #include <testsuite_hooks.h>
  27
  28 void test1()
  29 {
  30   using namespace std;
  31   bool test __attribute__((unused)) = true;
  32
  33   FILE* file = fopen("tmp_10063-1", "w");
  34   putc('0', file);
  35   putc('1', file);
  36   {
  37     __gnu_cxx::stdio_filebuf<char> sbuf(file, ios_base::out);
  38     sbuf.sputc('2');
  39     sbuf.sputc('3');
  40   }
  41   putc('4', file);
  42   fclose(file);
  43
  44   filebuf fbuf;
  45   fbuf.open("tmp_10063-1", ios_base::in);
  46   char buf[10];
  47   streamsize n = fbuf.sgetn(buf, sizeof(buf));
  48   fbuf.close();
  49
  50   VERIFY(n == 5);
  51   VERIFY(!memcmp(buf, "01234", 5));
  52 }
  53
  54 int main()
  55 {
  56   test1();
  57   return 0;
  58 }