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

   1 // Copyright (C) 2018-2021 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 3, or (at your option)
   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING3.  If not see
  16 // <http://www.gnu.org/licenses/>.
  17
  18 // { dg-options "-D_GLIBCXX_USE_CXX11_ABI=0" }
  19 // { dg-do run { target c++11 } }
  20
  21 #include <fstream>
  22 #include <system_error>
  23 #include <testsuite_hooks.h>
  24
  25 void
  26 test01()
  27 {
  28   using std::ios;
  29   bool caught_ios_failure = false;
  30   bool rethrown = false;
  31   bool caught_system_error = false;
  32   try {
  33     std::ifstream f;
  34     f.exceptions(ios::failbit | ios::badbit | ios::eofbit);
  35     try {
  36       f.get();
  37     }
  38     catch (const ios::failure&) // catch as old ABI type
  39     {
  40       caught_ios_failure = true;
  41 #if _GLIBCXX_USE_DUAL_ABI || _GLIBCXX_USE_CXX11_ABI == 1
  42       rethrown = true;
  43       throw; // re-throw, to catch as new ABI type
  44 #endif
  45     }
  46   }
  47   catch (const std::system_error& e)
  48   {
  49     caught_system_error = true;
  50   }
  51
  52   VERIFY( caught_ios_failure );
  53   if (rethrown)
  54     VERIFY( caught_system_error );
  55 }
  56
  57 void
  58 test02()
  59 {
  60   using std::ios;
  61   const std::exception* p = nullptr;
  62   bool caught_ios_failure = false;
  63   bool caught_exception = false;
  64   try {
  65     std::ifstream f;
  66     f.exceptions(ios::failbit | ios::badbit | ios::eofbit);
  67     try {
  68       f.get();
  69     }
  70     catch (const std::exception& e1)
  71     {
  72       caught_exception = true;
  73       p = &e1;
  74       throw;
  75     }
  76   }
  77   catch (const ios::failure& e2)
  78   {
  79     caught_ios_failure = true;
  80 #if _GLIBCXX_USE_DUAL_ABI
  81     // If the Dual ABI is active the library throws the new type,
  82     // so e1 was an object of that new type and so &e1 != &e2.
  83     VERIFY( p != &e2 );
  84 #else
  85     // Otherwise there's only one type of ios::failure, so &e1 == &e2.
  86     VERIFY( p == &e2 );
  87 #endif
  88   }
  89
  90   VERIFY( caught_exception );
  91   VERIFY( caught_ios_failure );
  92 }
  93
  94 int
  95 main()
  96 {
  97   test01();
  98   test02();
  99 }