libstdc++-v3/testsuite/19_diagnostics/system_error/what-3.cc

   1 // { dg-options "-std=gnu++0x" }
   2
   3 // Copyright (C) 2007
   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 2, 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 COPYING.  If not, write to the Free
  19 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  20 // USA.
  21
  22 #include <string>
  23 #include <system_error>
  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 }
  37
  38 void test04()
  39 {
  40   bool test __attribute__((unused)) = true;
  41   const std::string s("CA ISO emergency once again:immediate power down");
  42   const char* strlit1 = "wish I lived in Palo Alto";
  43   const char* strlit2 = "...or Santa Barbara";
  44   std::system_error obj1(std::error_code(), s);
  45
  46   // block 01
  47   {
  48     const std::string s2(strlit1);
  49     std::system_error obj2(std::error_code(), s2);
  50     obj1 = obj2;
  51   }
  52   allocate_on_stack();
  53   VERIFY( std::strcmp(strlit1, obj1.what()) == 0 );
  54
  55   // block 02
  56   {
  57     const std::string s3(strlit2);
  58     std::system_error obj3 = std::system_error(std::error_code(), s3);
  59     obj1 = obj3;
  60   }
  61   allocate_on_stack();
  62   VERIFY( std::strcmp(strlit2, obj1.what()) == 0 );
  63 }
  64
  65 int main(void)
  66 {
  67   test04();
  68   return 0;
  69 }