92 lines
2.5 KiB
C++
92 lines
2.5 KiB
C++
// { dg-options "-std=gnu++11" }
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//
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// Copyright (C) 2011-2015 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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//
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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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//
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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 <tr2/type_traits>
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#include <typeinfo>
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#include <stdexcept>
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struct A { };
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struct B1 : virtual public A { };
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struct B2 : virtual public A { };
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struct C : public B1, public B2 { };
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void test()
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{
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bool test __attribute__((unused)) = true;
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// 1
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{
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typedef std::tr2::direct_bases<A>::type tl;
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static_assert(tl::empty::value, "error");
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}
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// 2
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{
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typedef std::tr2::direct_bases<B1>::type tl1;
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typedef std::tr2::direct_bases<B2>::type tl2;
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// Sanity check w/ runtime.
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bool eq = typeid(tl1) == typeid(tl2);
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if (!eq)
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throw std::logic_error("typelist not equal");
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// Sanity check.
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static_assert(tl1::empty::value != std::true_type::value, "!empty");
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static_assert(tl2::empty::value != std::true_type::value, "!empty");
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typedef tl1::first::type tl1_first;
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typedef tl1::rest::type tl1_rest;
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typedef tl2::first::type tl2_first;
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typedef tl2::rest::type tl2_rest;
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eq = typeid(tl1_first) == typeid(tl2_first);
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if (!eq)
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throw std::logic_error("base not equal");
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static_assert(tl1_rest::empty::value == std::true_type::value, "empty");
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static_assert(tl2_rest::empty::value == std::true_type::value, "empty");
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}
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// 3
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{
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typedef std::tr2::direct_bases<C>::type tl;
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// Sanity check.
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static_assert(tl::empty::value != std::true_type::value, "!empty");
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typedef tl::first::type tl1_first;
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typedef tl::rest::type tl2;
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typedef tl2::first::type tl2_first;
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typedef tl2::rest::type tl3;
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bool eq = typeid(tl1_first) == typeid(tl2_first);
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if (eq)
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throw std::logic_error("bases are not equal");
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static_assert(tl3::empty::value == std::true_type::value, "empty");
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}
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}
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int main()
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{
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test();
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return 0;
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}
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