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// Bob Walters 10-2008

// Test for Container using non-standard pointer types.

// Copyright (C) 2008, 2009

// Free Software Foundation, Inc.

//

// This file is part of the GNU ISO C++ Library.  This library is free

// software; you can redistribute it and/or modify it under the

// terms of the GNU General Public License as published by the

// Free Software Foundation; either version 3, or (at your option)

// any later version.

// This library is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License along

// with this library; see the file COPYING3.  If not see

// <http://www.gnu.org/licenses/>.

// { dg-do compile }

#include <algorithm>

#include <testsuite_hooks.h>

#include <ext/pointer.h>

using __gnu_cxx::_Pointer_adapter;

using __gnu_cxx::_Relative_pointer_impl;

using __gnu_cxx::__static_pointer_cast;

using __gnu_cxx::__const_pointer_cast;

struct A {

  int i;

};

struct B : public A{

  int j;

};

typedef _Pointer_adapter<_Relative_pointer_impl<B> > B_pointer;

typedef _Pointer_adapter<_Relative_pointer_impl<const B> > const_B_pointer;

typedef _Pointer_adapter<_Relative_pointer_impl<A> > A_pointer;

typedef _Pointer_adapter<_Relative_pointer_impl<const A> > const_A_pointer;

void test01(void) {

  bool test __attribute__((unused)) = true;

  A a;

  B b;

  A_pointer aptr( &a );

  // Can't implicitly cast from A* to B*

  B_pointer bptr1(aptr); // { dg-error "required from here" 31 }

  B_pointer bptr2(&a); // { dg-error "required from here" 32 }

  // but explicit cast/conversion is OK.

  B_pointer bptr3(__static_pointer_cast<B_pointer>(aptr)); // ok

  B_pointer bptr4(__static_pointer_cast<B_pointer>(&a)); // ok

  // Can't implicitly cast from A* to B*

  bptr1 = aptr; // { dg-error "required from here" 39 }

  bptr1 = &a; // { dg-error "required from here" 40 }

  // but explicit cast/conversion is OK.

  bptr1 = __static_pointer_cast<B_pointer>(aptr); // ok

  bptr1 = __static_pointer_cast<B_pointer>(&a); // ok

  // Similarly, can't shed constness via implicit cast

  const_A_pointer captr(&a);

  A_pointer aptr2(captr); // { dg-error "required from here" 48 }

  // but explicit cast/conversion is OK.

  A_pointer aptr3(__const_pointer_cast<A_pointer>(captr)); // ok

  // Similarly, can't shed constness via implicit cast

  aptr2 = captr; // { dg-error "required from here" 54 }

  // but explicit cast/conversion is OK.

  aptr3 = __const_pointer_cast<A_pointer>(captr); // ok

  // Combine explicit const cast with implicit downcast.

  const_B_pointer cbptr(&b);

  A_pointer aptr4(cbptr); // { dg-error "required from here" 61 }

  aptr4 = cbptr; // { dg-error "required from here" 62 }

  A_pointer aptr5(__const_pointer_cast<B_pointer>(cbptr)); // ok

  aptr5 = __const_pointer_cast<B_pointer>(cbptr);  // ok

}

// { dg-prune-output "include" }