[libcxx-commits] [libcxx] [libc++] Implement P2897R7 aligned_accessor: An mdspan accessor expressing pointer over-alignment (PR #122603)

[Louis Dionne via libcxx-commits]

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@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20, c++23
+
+// <mdspan>
+//
+// template<class OtherElementType>
+//   explicit constexpr aligned_accessor(
+//     default_accessor<OtherElementType>) noexcept {}
+//
+// Constraints: is_convertible_v<OtherElementType(*)[], element_type(*)[]> is true.
+
+#include <mdspan>
+#include <cassert>
+#include <cstdint>
----------------
ldionne wrote:

```suggestion
#include <cstddef>
```

Here and elsewhere too.

https://github.com/llvm/llvm-project/pull/122603