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Fix size and alignment of array<T, 0>.

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An array T[1] isn't necessarily the same say when it's
a member of a struct. This patch addresses that problem and corrects
the tests to deal with it.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@324545 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eric Fiselier
2018-02-07 23:50:25 +00:00
parent 73660f725a
commit c0acd34e9a
3 changed files with 22 additions and 4 deletions
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5
include/array
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@@ -244,10 +244,11 @@ struct _LIBCPP_TEMPLATE_VIS array<_Tp, 0>
typedef std::reverse_iterator<iterator> reverse_iterator;
typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
typedef typename conditional<is_const<_Tp>::value, const char,
char>::type _CharType;
_ALIGNAS(alignment_of<_Tp[1]>::value) _CharType __elems_[sizeof(_Tp[1])];
struct _ArrayInStructT { _Tp __data_[1]; };
_ALIGNAS_TYPE(_ArrayInStructT) _CharType __elems_[sizeof(_ArrayInStructT)];
// No explicit construct/copy/destroy for aggregate type
_LIBCPP_INLINE_VISIBILITY void fill(const value_type&) {