[all-commits] [llvm/llvm-project] d8eb4a: [Support] Remove ciso646 include (#123578)

[Nikita Popov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: d8eb4ac41d881a19bea7673d753ba92e6a11f5d6
      https://github.com/llvm/llvm-project/commit/d8eb4ac41d881a19bea7673d753ba92e6a11f5d6
  Author: Nikita Popov <npopov at redhat.com>
  Date:   2025-01-23 (Thu, 23 Jan 2025)

  Changed paths:
    M llvm/include/llvm/Support/Threading.h

  Log Message:
  -----------
  [Support] Remove ciso646 include (#123578)

This header has been removed in C++20 and causes a large amount of
deprecation spam when building against libstdc++ 15 in C++17 mode.

As far as I understand, we just need to include *some* STL header to get
access to the version macros, and as this header also includes
<optional> nowadays we can just drop the <cstd646> include entirely.



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