libstdc++-v3/testsuite/20_util/add_pointer/value.cc

   1 // { dg-do compile { target c++11 } }
   2
   3 // Copyright (C) 2013-2018 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 <type_traits>
  21 #include <testsuite_tr1.h>
  22
  23 void test01()
  24 {
  25   using std::add_pointer;
  26   using std::is_same;
  27   using namespace __gnu_test;
  28
  29   static_assert(is_same<add_pointer<int>::type, int*>::value, "");
  30   static_assert(is_same<add_pointer<int*>::type, int**>::value, "");
  31   static_assert(is_same<add_pointer<const int>::type, const int*>::value, "");
  32   static_assert(is_same<add_pointer<int&>::type, int*>::value, "");
  33   static_assert(is_same<add_pointer<ClassType*>::type,
  34                 ClassType**>::value, "");
  35   static_assert(is_same<add_pointer<ClassType>::type, ClassType*>::value, "");
  36 }
  37
  38 void test02()
  39 {
  40   using std::add_pointer;
  41   using std::is_same;
  42
  43   void f1();
  44   using f1_type = decltype(f1);
  45   using pf1_type = decltype(&f1);
  46   static_assert(is_same<add_pointer<f1_type>::type, pf1_type>::value, "");
  47   void f2() noexcept; // PR libstdc++/78361
  48   using f2_type = decltype(f2);
  49   using pf2_type = decltype(&f2);
  50   static_assert(is_same<add_pointer<f2_type>::type, pf2_type>::value, "");
  51 }