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

   1 // { dg-options "-std=gnu++11" }
   2 // { dg-require-atomic-builtins "" }
   3
   4 // Copyright (C) 2010-2016 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 3, 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 COPYING3.  If not see
  19 // <http://www.gnu.org/licenses/>.
  20
  21 #include <exception>
  22 #include <testsuite_hooks.h>
  23
  24 // test NullablePointer requirements
  25 void test01()
  26 {
  27   std::exception_ptr p1;        // DefaultConstructible
  28   std::exception_ptr p2(p1);    // CopyConstructible
  29   p1 = p2;                      // CopyAssignable
  30   VERIFY( p1 == p2 );           // EqualityComparable
  31   VERIFY( !bool(p1) );          // contextually convertible to bool
  32   swap(p1, p2);                 // Swappable
  33
  34   // Table 39 expressions
  35   std::exception_ptr p3 = nullptr;
  36   std::exception_ptr p4(nullptr);
  37   VERIFY( std::exception_ptr() == nullptr );
  38   p4 = nullptr;
  39   VERIFY( p4 == nullptr );
  40   VERIFY( nullptr == p4 );
  41   VERIFY( (p4 != nullptr) == !(p4 == nullptr) );
  42   VERIFY( (nullptr != p4) == !(p4 == nullptr) );
  43
  44   std::exception_ptr p5{};      // value initialized ...
  45   VERIFY( p5 == nullptr );      // ... is equivalent to null
  46 }
  47
  48 // additional exception_ptr requirements
  49 void test02()
  50 {
  51   std::exception_ptr p1;
  52   VERIFY( p1 == nullptr );
  53 }
  54
  55 int main()
  56 {
  57   test01();
  58   test02();
  59   return 0;
  60 }