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Workaround for bogus [-Wignored-attributes] warning on GCC 6.x/7.x

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This commit is contained in:
Paul Groke
2017-10-03 12:47:04 +02:00
parent 6cb4f456d1
commit 37d0a0bc04
1 changed files with 16 additions and 3 deletions
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19
include/boost/move/detail/type_traits.hpp
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@ -967,14 +967,13 @@ typedef union max_align max_align_t;
#if !defined(BOOST_NO_ALIGNMENT)
template<std::size_t Len, std::size_t Align>
struct aligned_storage_impl;
struct aligned_struct;
#define BOOST_MOVE_ALIGNED_STORAGE_WITH_BOOST_ALIGNMENT(A)\
template<std::size_t Len>\
struct BOOST_ALIGNMENT(A) aligned_storage_impl<Len, A>\
struct BOOST_ALIGNMENT(A) aligned_struct<Len, A>\
{\
char dummy[Len];\
typedef aligned_storage_impl<Len, A> type;\
};\
//
@ -995,6 +994,20 @@ BOOST_MOVE_ALIGNED_STORAGE_WITH_BOOST_ALIGNMENT(0x1000)
#undef BOOST_MOVE_ALIGNED_STORAGE_WITH_BOOST_ALIGNMENT
// Workaround for bogus [-Wignored-attributes] warning on GCC 6.x/7.x: don't use a type that "directly" carries the alignment attribute.
// See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82270
template<std::size_t Len, std::size_t Align>
struct aligned_struct_wrapper
{
aligned_struct<Len, Align> dummy;
};
template<std::size_t Len, std::size_t Align>
struct aligned_storage_impl
{
typedef aligned_struct_wrapper<Len, Align> type;
};
#else //BOOST_NO_ALIGNMENT
template<class T, std::size_t Len>