alignof.cpp 863 B

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