65 lines
1.9 KiB
C++
65 lines
1.9 KiB
C++
// { dg-do run { target c++14 } }
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// Copyright (C) 2015-2017 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING3. If not see
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// <http://www.gnu.org/licenses/>.
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#include <experimental/propagate_const>
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#include <testsuite_hooks.h>
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using std::experimental::propagate_const;
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using std::hash;
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int main()
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{
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int x{42};
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propagate_const<int*> xx{&x};
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VERIFY(bool(xx));
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propagate_const<int*> xx2{};
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VERIFY(!bool(xx2));
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struct X {int x;};
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X x3{42};
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propagate_const<X*> xx3{&x3};
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VERIFY(xx3->x == 42);
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VERIFY((*xx3).x == 42);
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VERIFY(xx3.get() == &x3);
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const propagate_const<X*> xx4{&x3};
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VERIFY(xx4->x == 42);
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VERIFY((*xx4).x == 42);
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VERIFY(xx4.get() == &x3);
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static constexpr int x4{42};
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constexpr propagate_const<const int*> xx5{&x4};
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static_assert(bool(xx5), "");
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constexpr propagate_const<const int*> xx6{};
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static_assert(!bool(xx6), "");
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struct X2 {int x;};
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static constexpr X2 x5{42};
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constexpr propagate_const<const X2*> xx7{&x5};
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static_assert(xx7->x == 42, "");
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static_assert((*xx7).x == 42, "");
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static_assert(xx7.get() == &x5, "");
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struct X3
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{
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int f() {return 42;}
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int f() const {return 666;}
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};
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X3 xx8;
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propagate_const<X3*> xx9{&xx8};
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const propagate_const<X3*> xx10{&xx8};
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VERIFY(xx9->f() == 42);
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VERIFY(xx10->f() == 666);
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}
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