libstdc++-v3/testsuite/18_support/exception_ptr/requirements.cc

   1 // { dg-do run { target c++11 } }
   2
   3 // Copyright (C) 2010-2024 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 <exception>
  21 #include <testsuite_hooks.h>
  22
  23 // test NullablePointer requirements
  24 void test01()
  25 {
  26   std::exception_ptr p1;        // DefaultConstructible
  27   std::exception_ptr p2(p1);    // CopyConstructible
  28   p1 = p2;                      // CopyAssignable
  29   VERIFY( p1 == p2 );           // EqualityComparable
  30   VERIFY( !bool(p1) );          // contextually convertible to bool
  31   swap(p1, p2);                 // Swappable
  32
  33   // Table 39 expressions
  34   std::exception_ptr p3 = nullptr;
  35   std::exception_ptr p4(nullptr);
  36   VERIFY( std::exception_ptr() == nullptr );
  37   p4 = nullptr;
  38   VERIFY( p4 == nullptr );
  39   VERIFY( nullptr == p4 );
  40   VERIFY( (p4 != nullptr) == !(p4 == nullptr) );
  41   VERIFY( (nullptr != p4) == !(p4 == nullptr) );
  42
  43   std::exception_ptr p5{};      // value initialized ...
  44   VERIFY( p5 == nullptr );      // ... is equivalent to null
  45 }
  46
  47 // additional exception_ptr requirements
  48 void test02()
  49 {
  50   std::exception_ptr p1;
  51   VERIFY( p1 == nullptr );
  52 }
  53
  54 int main()
  55 {
  56   test01();
  57   test02();
  58   return 0;
  59 }