libstdc++-v3/testsuite/25_algorithms/copy/streambuf_iterators/char/2.cc

   1 // 2006-03-20  Paolo Carlini  <pcarlini@suse.de>
   2
   3 // Copyright (C) 2006-2024 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 #include <iterator>
  21 #include <sstream>
  22 #include <algorithm>
  23 #include <cstring>
  24 #include <testsuite_hooks.h>
  25
  26 // In the occasion of libstdc++/25482
  27 void test01()
  28 {
  29   using namespace std;
  30
  31   typedef istreambuf_iterator<char> in_iterator_type;
  32
  33   const char data1[] = "Drei Phantasien nach Friedrich Holderlin";
  34   const string str1(data1);
  35   istringstream iss1(str1);
  36   in_iterator_type beg1(iss1);
  37   in_iterator_type end1;
  38
  39   char buffer1[sizeof(data1) * 5];
  40   memset(buffer1, '*', sizeof(buffer1));
  41   char* out1 = buffer1;
  42
  43   out1 = copy(beg1, beg1, out1);
  44   VERIFY( out1 == buffer1 );
  45
  46   out1 = copy(end1, end1, out1);
  47   VERIFY( out1 == buffer1 );
  48
  49   out1 = copy(beg1, end1, out1);
  50   VERIFY( string(buffer1, out1) == str1 );
  51   *out1++ = 'x';
  52   VERIFY( string(buffer1, out1) == str1 + 'x' );
  53   memset(buffer1, '*', sizeof(buffer1));
  54
  55   iss1.seekg(0);
  56   out1 = buffer1;
  57   memset(buffer1, '*', sizeof(buffer1));
  58   out1 = copy(beg1, end1, out1);
  59   VERIFY( string(buffer1, out1) == str1 );
  60   *out1++ = 'y';
  61   VERIFY( string(buffer1, out1) == str1 + 'y' );
  62   out1 = buffer1;
  63   memset(buffer1, '*', sizeof(buffer1));
  64   out1 = copy(beg1, end1, out1);
  65   VERIFY( string(buffer1, out1) == "" );
  66
  67   iss1.seekg(0);
  68   out1 = copy(beg1, end1, out1);
  69   VERIFY( string(buffer1, out1) == str1 );
  70 }
  71
  72 int main()
  73 {
  74   test01();
  75   return 0;
  76 }