<cstdlib>: missing std::aligned_alloc function.

[B1aNB1aN]

Describe the bug
std::aligned_alloc is added to c++ standard at c++17 standard. Is there any plan to implement this function?

[fsb4000]

No, as far as I know.

(Reasons: https://docs.microsoft.com/en-us/cpp/overview/visual-cpp-language-conformance?view=msvc-160#note_M )

Use _aligned_malloc and _aligned_free

https://docs.microsoft.com/en-us/cpp/c-runtime-library/reference/aligned-malloc?view=msvc-160

I think I asked Stephan about it in 2016 year.

That was our first conversation at comments section of https://devblogs.microsoft.com/cppblog/

😊

[CaseyCarter]

@fsb4000 has it right. Windows supports aligned allocation, but those allocations can't be deallocated by free, so there's no way to support aligned_alloc without major destabilizing changes. Windows folk have expressed to us a distinct lack of interest in making such changes.