[PATCH] D106129: [ExecutionEngine] Check for libunwind before calling __register_frame

[Harald van Dijk via Phabricator via llvm-commits]

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libgcc and libunwind have different flavours of __register_frame. Both flavours are already correctly handled, except that the code to handle the libunwind flavour is guarded by __APPLE__. This change uses the presence of __unw_add_dynamic_fde in libunwind instead to detect whether libunwind is used, rather than hardcoding it as Apple vs. non-Apple.

      

Fixes PR44074.

      

Thanks to Albert Jin <albert.jin at gmail.com> and Chris Schafmeister <chris.schaf at verizon.net> for identifying the problem.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D106129

Files:
  llvm/cmake/config-ix.cmake
  llvm/cmake/unwind.h
  llvm/include/llvm/Config/config.h.cmake
  llvm/lib/ExecutionEngine/Orc/TargetProcess/RegisterEHFrames.cpp
  llvm/lib/ExecutionEngine/RuntimeDyld/RTDyldMemoryManager.cpp

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