ceph/src/boost/libs/hana/test/type/alignof.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/assert.hpp>
   6 #include <boost/hana/equal.hpp>
   7 #include <boost/hana/integral_constant.hpp>
   8 #include <boost/hana/type.hpp>
   9 namespace hana = boost::hana;
  10
  11
  12 struct T { };
  13
  14 int main() {
  15     BOOST_HANA_CONSTANT_CHECK(hana::equal(
  16         hana::alignof_(T{}),
  17         hana::size_c<alignof(T)>
  18     ));
  19
  20     BOOST_HANA_CONSTANT_CHECK(hana::equal(
  21         hana::alignof_(hana::type_c<T>),
  22         hana::size_c<alignof(T)>
  23     ));
  24
  25     // make sure we don't read from non-constexpr variables
  26     {
  27         auto t = hana::type_c<T>;
  28         auto x = 1;
  29         constexpr auto r1 = hana::alignof_(t); (void)r1;
  30         constexpr auto r2 = hana::alignof_(x); (void)r2;
  31     }
  32 }