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

   1 // { dg-do run { target c++11 } }
   2
   3 // Copyright (C) 2007-2023 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 #include <string>
  21 #include <system_error>
  22 #include <testsuite_hooks.h>
  23
  24 // test copy ctors, assignment operators, and persistence of member string data
  25 // libstdc++/1972
  26 // via Greg Bumgardner <bumgard@roguewave.com>
  27 void allocate_on_stack(void)
  28 {
  29   const size_t num = 512;
  30   __extension__ char array[num];
  31   for (size_t i = 0; i < num; i++)
  32     array[i]=0;
  33   // Suppress unused warnings.
  34   for (size_t i = 0; i < num; i++)
  35     array[i]=array[i];
  36 }
  37
  38 void test04()
  39 {
  40   const std::string s("CA ISO emergency once again:immediate power down");
  41   const char* strlit1 = "wish I lived in Palo Alto";
  42   const char* strlit2 = "...or Santa Barbara";
  43   std::system_error obj1(std::error_code(), s);
  44
  45   // block 01
  46   {
  47     const std::string s2(strlit1);
  48     std::system_error obj2(std::error_code(), s2);
  49     obj1 = obj2;
  50   }
  51   allocate_on_stack();
  52   VERIFY( std::string(obj1.what()).find(strlit1) != std::string::npos );
  53
  54   // block 02
  55   {
  56     const std::string s3(strlit2);
  57     std::system_error obj3 = std::system_error(std::error_code(), s3);
  58     obj1 = obj3;
  59   }
  60   allocate_on_stack();
  61   VERIFY( std::string(obj1.what()).find(strlit2) != std::string::npos );
  62 }
  63
  64 int main(void)
  65 {
  66   test04();
  67   return 0;
  68 }