Summary

This change removes the use of the std::aligned_storage type in contrib/any.hpp and replaces it with a struct with an explicit alignment requirement inheriting an array of bytes of the right size.

Motivation

The std::aligned_storage type has been deprecated in C++23, which may cause warnings in client code using the any.hpp header directly or indirectly.

References for this change are this stackoverflow discussion and the paper P1413R3 that suggested the deprecation.

In that paper, the suggested change is the following:

- std::aligned_storage_t<sizeof(T), alignof(T)> t_buff;
+ alignas(T) std::byte t_buff[sizeof(T)];

However in the context of the library and its clang-tidy rules (in this case, modernize-* rules) generate a warning with C-arrays and advise using a std::array instead.

Impacts on API / ABI

There is no impact on API, and as far as I know it should be ABI compatible.

Summary by CodeRabbit

• Refactor
  • Improved internal storage implementation to enhance memory alignment handling.

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