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

   1 // 2004-07-07  Paolo Carlini  <pcarlini@suse.de>
   2
   3 // Copyright (C) 2004-2019 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 3, 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 COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20 // 27.7.1.3 basic_stringbuf overridden virtual functions.
  21
  22 // { dg-options "-DMAX_SIZE=100000" { target simulator } }
  23
  24 #ifndef MAX_SIZE
  25 #define MAX_SIZE 10000000
  26 #endif
  27
  28 #include <sstream>
  29 #include <cstdlib>
  30 #include <testsuite_hooks.h>
  31
  32 using namespace std;
  33
  34 wstring
  35 data(unsigned len)
  36 {
  37   wstring ret;
  38   for (unsigned i = 0; i < len; ++i)
  39     ret.push_back(L'a' + rand() % 26);
  40   return ret;
  41 }
  42
  43 void
  44 test01(unsigned iter)
  45 {
  46   for (unsigned n = 1; n <= iter; n *= 10)
  47     {
  48       const wstring str = data(n);
  49       wstringbuf sstr;
  50       for (unsigned i = 0; i < n; ++i)
  51         sstr.sputc(str[i]);
  52       VERIFY( str == sstr.str() );
  53     }
  54 }
  55
  56 int main()
  57 {
  58   test01(MAX_SIZE);
  59   return 0;
  60 }