[all-commits] [llvm/llvm-project] e0df85: Normalize ptrauth handling in sanitizer runtime:

[Anton Korobeynikov via All-commits]

  Branch: refs/heads/users/asl/compiler-rt-pauth-includes
  Home:   https://github.com/llvm/llvm-project
  Commit: e0df857da214737ab6383611ee6a57eb60190a7e
      https://github.com/llvm/llvm-project/commit/e0df857da214737ab6383611ee6a57eb60190a7e
  Author: Anton Korobeynikov <anton at korobeynikov.info>
  Date:   2024-07-24 (Wed, 24 Jul 2024)

  Changed paths:
    M compiler-rt/lib/sanitizer_common/sanitizer_ptrauth.h

  Log Message:
  -----------
  Normalize ptrauth handling in sanitizer runtime:
 1. Include ptrauth.h if ptrauth_intrinsics language feature is specified
    (per ptrauth spec, this is what enables ptrauh.h usage)
 2. For PAC-RET fallback implement two changes:
   - Switch to macro, so we can ignore key argument
   - Ensure the unsigned value is erased from LR, so the
     possibility of gadget reuse is reduced.

Fixes #100467



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