[all-commits] [llvm/llvm-project] 955ece: [libc++] Add checks for misused hardening macros (...

[Louis Dionne via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 955ece4fa53e5309dd38795efd6a357ddf52963b
      https://github.com/llvm/llvm-project/commit/955ece4fa53e5309dd38795efd6a357ddf52963b
  Author: Louis Dionne <ldionne.2 at gmail.com>
  Date:   2025-07-31 (Thu, 31 Jul 2025)

  Changed paths:
    M libcxx/include/__config

  Log Message:
  -----------
  [libc++] Add checks for misused hardening macros (#150669)

Libc++ hardening went through several iterations, sometimes within a
single release. However, some folks in the wild have picked up these
macros that were either public at some point or that were used
temporarily on `main`, and unfortunately those are now ignored.

This can lead to some users thinking they enable hardening when in
reality they don't, which is a pretty big deal. This patch simply checks
various old hardening-related macros and ensures that they are not set,
which will catch such misuse.



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