libstdc++-v3/testsuite/27_io/ios_base/failure/what-3.cc

   1 // 2001-02-26 Benjamin Kosnik  <bkoz@redhat.com>
   2
   3 // Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2009, 2010
   4 // Free Software Foundation, Inc.
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 3, or (at your option)
  10 // any later version.
  11
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16
  17 // You should have received a copy of the GNU General Public License along
  18 // with this library; see the file COPYING3.  If not see
  19 // <http://www.gnu.org/licenses/>.
  20
  21 // 19.1 Exception classes
  22
  23 #include <string>
  24 #include <ios>
  25 #include <cstring>
  26 #include <testsuite_hooks.h>
  27
  28 // test copy ctors, assignment operators, and persistence of member string data
  29 // libstdc++/1972
  30 // via Greg Bumgardner <bumgard@roguewave.com>
  31 void allocate_on_stack(void)
  32 {
  33   const size_t num = 512;
  34   __extension__ char array[num];
  35   for (size_t i = 0; i < num; i++)
  36     array[i]=0;
  37   for (size_t i = 0; i < num; i++)
  38     array[i]=array[i]; // Suppress unused warning.
  39 }
  40
  41 void test04()
  42 {
  43   bool test __attribute__((unused)) = true;
  44   const std::string s("CA ISO emergency once again:immediate power down");
  45   const char* strlit1 = "wish I lived in Palo Alto";
  46   const char* strlit2 = "...or Santa Barbara";
  47   std::ios_base::failure obj1(s);
  48
  49   // block 01
  50   {
  51     const std::string s2(strlit1);
  52     std::ios_base::failure obj2(s2);
  53     obj1 = obj2;
  54   }
  55   allocate_on_stack();
  56   VERIFY( std::strcmp(strlit1, obj1.what()) == 0 );
  57
  58   // block 02
  59   {
  60     const std::string s3(strlit2);
  61     std::ios_base::failure obj3 = std::ios_base::failure(s3);
  62     obj1 = obj3;
  63   }
  64   allocate_on_stack();
  65   VERIFY( std::strcmp(strlit2, obj1.what()) == 0 );
  66 }
  67
  68 int main(void)
  69 {
  70   test04();
  71   return 0;
  72 }