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

   1 // { dg-do run { target c++11 } }
   2
   3 // Copyright (C) 2007-2017 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 <stdexcept>
  22 #include <cstring>
  23 #include <testsuite_hooks.h>
  24
  25 // test copy ctors, assignment operators, and persistence of member string data
  26 // libstdc++/1972
  27 // via Greg Bumgardner <bumgard@roguewave.com>
  28 void allocate_on_stack(void)
  29 {
  30   const size_t num = 512;
  31   __extension__ char array[num];
  32   for (size_t i = 0; i < num; i++)
  33     array[i]=0;
  34   // Suppress unused warnings.
  35   for (size_t i = 0; i < num; i++)
  36     array[i]=array[i];
  37 }
  38
  39 void test04()
  40 {
  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::logic_error obj1(s);
  45
  46   // block 01
  47   {
  48     const std::string s2(strlit1);
  49     std::logic_error obj2(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::logic_error obj3 = std::logic_error(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 }