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boost::none is constexpr-declared

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This commit is contained in:
Andrzej Krzemienski
2020-10-24 17:17:10 +02:00
parent 2b08711ec6
commit 7e0b8145b5
45 changed files with 139 additions and 120 deletions
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7
include/boost/none.hpp
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@ -24,7 +24,7 @@ namespace boost {
#ifdef BOOST_OPTIONAL_USE_OLD_DEFINITION_OF_NONE
BOOST_INLINE_VARIABLE none_t const none = (static_cast<none_t>(0)) ;
BOOST_INLINE_VARIABLE none_t BOOST_CONSTEXPR_OR_CONST none = (static_cast<none_t>(0)) ;
#elif defined BOOST_OPTIONAL_USE_SINGLETON_DEFINITION_OF_NONE
@ -45,16 +45,15 @@ namespace detail { namespace optional_detail {
namespace {
// TU-local
const none_t& none = detail::optional_detail::none_instance<none_t>::instance;
const none_t& none = detail::optional_detail::none_instance<none_t>::instance;
}
#else
BOOST_INLINE_VARIABLE const none_t none ((none_t::init_tag()));
BOOST_INLINE_VARIABLE BOOST_CONSTEXPR_OR_CONST none_t none ((none_t::init_tag()));
#endif // older definitions
} // namespace boost
#endif // header guard