From a296628ce329a09c86a4e1bcdc306134f445568b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ion=20Gazta=C3=B1aga?= <igaztanaga@gmail.com>
Date: Tue, 30 Jan 2018 14:18:45 +0100
Subject: [PATCH] Add member "data" char array to aligned_storage::type so that
 placement new does not break strict alignment

---
 include/boost/move/detail/type_traits.hpp | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/include/boost/move/detail/type_traits.hpp b/include/boost/move/detail/type_traits.hpp
index 272cb11..a3326d0 100644
--- a/include/boost/move/detail/type_traits.hpp
+++ b/include/boost/move/detail/type_traits.hpp
@@ -973,7 +973,7 @@ struct aligned_struct;
 template<std::size_t Len>\
 struct BOOST_ALIGNMENT(A) aligned_struct<Len, A>\
 {\
-   char dummy[Len];\
+   char data[Len];\
 };\
 //
 
@@ -997,9 +997,10 @@ BOOST_MOVE_ALIGNED_STORAGE_WITH_BOOST_ALIGNMENT(0x1000)
 // 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
+union aligned_struct_wrapper
 {
-   aligned_struct<Len, Align> dummy;
+   aligned_struct<Len, Align> aligner;
+   char data[sizeof(aligned_struct<Len, Align>)];
 };
 
 template<std::size_t Len, std::size_t Align>
@@ -1014,7 +1015,7 @@ template<class T, std::size_t Len>
 union aligned_union
 {   
    T aligner;
-   char dummy[Len];
+   char data[Len];
 };
 
 template<std::size_t Len, std::size_t Align, class T, bool Ok>