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Fix trivially-constructible bug with deleted functions

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This commit is contained in:
Andrzej Krzemienski
2017-11-02 22:46:09 +01:00
parent 01ebd2ad7f
commit 69bf75ae6d
2 changed files with 21 additions and 1 deletions
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12
include/boost/optional/optional.hpp
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@ -20,6 +20,10 @@
#include <new>
#include <iosfwd>
#ifdef BOOST_OPTIONAL_DETAIL_USE_STD_TYPE_TRAITS
# include <type_traits>
#endif
#include <boost/assert.hpp>
#include <boost/core/addressof.hpp>
#include <boost/core/enable_if.hpp>
@ -828,10 +832,16 @@ struct is_type_trivially_copyable
namespace optional_config {
#ifndef BOOST_OPTIONAL_DETAIL_USE_STD_TYPE_TRAITS
# define BOOST_OPTIONAL_DETAIL_HAS_TRIVIAL_CTOR(T) BOOST_HAS_TRIVIAL_CONSTRUCTOR(T)
#else
# define BOOST_OPTIONAL_DETAIL_HAS_TRIVIAL_CTOR(T) std::is_trivially_default_constructible<T>::value
#endif
#ifndef BOOST_OPTIONAL_DETAIL_NO_SPEC_FOR_TRIVIAL_TYPES
template <typename T>
struct is_type_trivial
: boost::conditional< (optional_detail::is_type_trivially_copyable<T>::value && BOOST_HAS_TRIVIAL_CONSTRUCTOR(T)) ||
: boost::conditional< (optional_detail::is_type_trivially_copyable<T>::value && BOOST_OPTIONAL_DETAIL_HAS_TRIVIAL_CTOR(T)) ||
(boost::is_scalar<T>::value && !boost::is_const<T>::value && !boost::is_volatile<T>::value)
, boost::true_type, boost::false_type>::type
{};