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// Copyright (c) 2017
// Mikhail Maximov
//
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
#include "boost/config.hpp"
#include "boost/core/lightweight_test.hpp"
#ifdef __cpp_inheriting_constructors
// Test is based on reported issue:
// https://svn.boost.org/trac/boost/ticket/12680
// GCC 6 crashed, trying to determine is boost::recursive_wrapper<Node>
// is_noexcept_move_constructible
#include <string>
#include <boost/variant.hpp>
#include <boost/array.hpp>
struct Leaf { };
struct Node;
typedef boost::variant<Leaf, boost::recursive_wrapper<Node>> TreeBase;
struct Tree : TreeBase {
using TreeBase::TreeBase;
template <typename Iter>
static Tree Create(Iter /*first*/, Iter /*last*/) { return Leaf{}; }
};
struct Node {
Tree left, right;
};
// Test from https://svn.boost.org/trac/boost/ticket/7120
template<class Node>
struct node1_type;
struct var_type;
using var_base = boost::variant<int,
boost::recursive_wrapper<node1_type<var_type>>
>;
template<class Node>
struct node1_type {
boost::array<Node, 1> children;
};
struct var_type : var_base {
using var_base::var_base;
};
void run() {
std::string input{"abracadabra"};
const Tree root = Tree::Create(input.begin(), input.end());
(void)root; // prevents unused variable warning
var_type v1 = 1;
(void)v1;
}
#else // #!ifdef __cpp_inheriting_constructors
// if compiler does not support inheriting constructors - does nothing
void run() {}
#endif
int main()
{
run();
return boost::report_errors();
}
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