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Fix initialization of array<const T, 0> with GCC.
Previously, when handling zero-sized array of const objects we used a const version of aligned_storage_t, which is not an array type. However, GCC complains about initialization of the form: array<const T, 0> arr = {}; This patch fixes that bug by making the dummy object used to represent the zero-sized array an array itself. This avoids GCC's complaints about the uninitialized const member. llvm-svn: 324194
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@ -146,21 +146,19 @@ struct __array_traits {
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template <class _Tp>
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struct __array_traits<_Tp, 0> {
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typedef typename aligned_storage<sizeof(_Tp), alignment_of<_Tp>::value>::type
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_NonConstStorageT;
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_NonConstStorageT[1];
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typedef typename conditional<is_const<_Tp>::value, const _NonConstStorageT,
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_NonConstStorageT>::type _StorageT;
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typedef typename remove_const<_Tp>::type _NonConstTp;
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_LIBCPP_INLINE_VISIBILITY
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static _NonConstTp* __data(_NonConstStorageT& __store) {
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_StorageT *__ptr = std::addressof(__store);
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return reinterpret_cast<_NonConstTp*>(__ptr);
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static _NonConstTp* __data(_NonConstStorageT &__store) {
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return reinterpret_cast<_NonConstTp*>(__store);
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}
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_LIBCPP_INLINE_VISIBILITY
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static const _Tp* __data(const _StorageT& __store) {
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const _StorageT *__ptr = std::addressof(__store);
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return reinterpret_cast<const _Tp*>(__ptr);
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static const _Tp* __data(const _StorageT &__store) {
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return reinterpret_cast<const _Tp*>(__store);
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}
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_LIBCPP_INLINE_VISIBILITY
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