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hana/test/ext/std/tuple/bugs/libcxx_19616.cpp

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/*
@copyright Louis Dionne 2014
Distributed under the Boost Software License, Version 1.0.
(See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
*/
#include <boost/hana/ext/std/tuple.hpp>
#include <boost/hana/detail/static_assert.hpp>
#include <tuple>
using namespace boost::hana;
int main() {
// Make sure we workaround the bug at:
// http://llvm.org/bugs/show_bug.cgi?id=19616
BOOST_HANA_STATIC_ASSERT(
lift<StdTuple>(std::make_tuple(1)) ==
std::make_tuple(std::make_tuple(1))
);
// The following shows the actual bug:
#if 0
static_assert(
std::tuple_cat(
std::make_tuple(std::make_tuple(1)),
std::make_tuple()
)
==
std::make_tuple(std::make_tuple(1))
, "");
#endif
}