std::align_val_t
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align_val_t
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align_val_t
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Defined in header
<new>
enum class align_val_t : std::size_t {};
(since C++17)
Both new-expression and delete-expression, when used with objects whose alignment requirement is greater than __STDCPP_DEFAULT_NEW_ALIGNMENT__, pass that alignment requirement as an argument of type std::align_val_t to the selected allocation/deallocation function.
[edit] Notes
Alignment (as obtained by alignof) has the type std::size_t , but placement forms of allocation and deallocation functions that take std::size_t as an additional parameter are already in use, so this type is used instead.
| Feature-test macro | Value | Std | Feature |
|---|---|---|---|
__cpp_aligned_new |
201606L |
(C++17) | Dynamic memory allocation for over-aligned data |