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

   1 // 2001-02-26 Benjamin Kosnik  <bkoz@redhat.com>
   2
   3 // Copyright (C) 2001-2023 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 // 19.1 Exception classes
  21
  22 #include <string>
  23 #include <ios>
  24 #include <cstring>
  25 #include <testsuite_hooks.h>
  26
  27 // test copy ctors, assignment operators, and persistence of member string data
  28 // libstdc++/1972
  29 // via Greg Bumgardner <bumgard@roguewave.com>
  30 void allocate_on_stack(void)
  31 {
  32   const size_t num = 512;
  33   __extension__ char array[num];
  34   for (size_t i = 0; i < num; i++)
  35     array[i]=0;
  36   for (size_t i = 0; i < num; i++)
  37     array[i]=array[i]; // Suppress unused warning.
  38 }
  39
  40 void test04()
  41 {
  42   const std::string s("CA ISO emergency once again:immediate power down");
  43   const char* strlit1 = "wish I lived in Palo Alto";
  44   const char* strlit2 = "...or Santa Barbara";
  45   std::ios_base::failure obj1(s);
  46
  47   // block 01
  48   {
  49     const std::string s2(strlit1);
  50     std::ios_base::failure obj2(s2);
  51     obj1 = obj2;
  52   }
  53   allocate_on_stack();
  54 #if _GLIBCXX_USE_CXX11_ABI
  55   VERIFY( std::strstr(obj1.what(), strlit1) != NULL );
  56 #else
  57   VERIFY( std::strcmp(strlit1, obj1.what()) == 0 );
  58 #endif
  59
  60   // block 02
  61   {
  62     const std::string s3(strlit2);
  63     std::ios_base::failure obj3 = std::ios_base::failure(s3);
  64     obj1 = obj3;
  65   }
  66   allocate_on_stack();
  67 #if _GLIBCXX_USE_CXX11_ABI
  68   VERIFY( std::strstr(obj1.what(), strlit2) != NULL );
  69 #else
  70   VERIFY( std::strcmp(strlit2, obj1.what()) == 0 );
  71 #endif
  72 }
  73
  74 int main(void)
  75 {
  76   test04();
  77   return 0;
  78 }