libstdc++-v3/testsuite/27_io/basic_stringbuf/overflow/char/1.cc

   1 // 2004-07-07  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 basic_stringbuf overridden virtual functions.
  22
  23 #include <sstream>
  24 #include <cstdlib>
  25 #include <testsuite_hooks.h>
  26
  27 using namespace std;
  28
  29 string
  30 data(unsigned len)
  31 {
  32   string ret;
  33   for (unsigned i = 0; i < len; ++i)
  34     ret.push_back('a' + rand() % 26);
  35   return ret;
  36 }
  37
  38 void
  39 test01(unsigned iter)
  40 {
  41   bool test __attribute__((unused)) = true;
  42
  43   for (unsigned n = 1; n <= iter; n *= 10)
  44     {
  45       const string str = data(n);
  46       stringbuf sstr;
  47       for (unsigned i = 0; i < n; ++i)
  48         sstr.sputc(str[i]);
  49       VERIFY( str == sstr.str() );
  50     }
  51 }
  52
  53 int main()
  54 {
  55   test01(10000000);
  56   return 0;
  57 }