[all-commits] [llvm/llvm-project] 3493e3: [PAC][libunwind] Fix gcc build of libunwind

[Oliver Hunt via All-commits]

  Branch: refs/heads/users/ojhunt/fix-libunwind-gcc-build
  Home:   https://github.com/llvm/llvm-project
  Commit: 3493e3d65fa1b2f17dd8aba51c7f680c6911334b
      https://github.com/llvm/llvm-project/commit/3493e3d65fa1b2f17dd8aba51c7f680c6911334b
  Author: Oliver Hunt <oliver at apple.com>
  Date:   2025-10-21 (Tue, 21 Oct 2025)

  Changed paths:
    M libunwind/include/__libunwind_config.h
    M libunwind/src/UnwindRegistersRestore.S
    M libunwind/src/UnwindRegistersSave.S

  Log Message:
  -----------
  [PAC][libunwind] Fix gcc build of libunwind

This adds guards on the ptrauth feature checks so that they are
only performed if __has_feature is actually available.



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