ceph/src/boost/libs/hana/test/tuple/cnstr.nested.cpp

   1 // Copyright Louis Dionne 2013-2017
   2 // Distributed under the Boost Software License, Version 1.0.
   3 // (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
   4
   5 #include <boost/hana/tuple.hpp>
   6
   7 #include <type_traits>
   8 namespace hana = boost::hana;
   9
  10
  11 // See this bug: https://llvm.org/bugs/show_bug.cgi?id=24173
  12
  13 template <typename ...Xs>
  14 constexpr hana::tuple<std::decay_t<Xs>...> f(Xs&& ...xs)
  15 { return hana::tuple<std::decay_t<Xs>...>{static_cast<Xs&&>(xs)...}; }
  16
  17 int main() {
  18     f(f(f(f(f(f(f(f(f(f(f(f(1))))))))))));
  19 }