[PATCH] D75954: Cache uwnind frame headers as they are found.

[Dimitry Andric via Phabricator via llvm-commits]

dim added a comment.

I turned on `_LIBUNWIND_DEBUG_FRAMEHEADER_CACHE`, and indeed such segfaults appear immediately after the message `libunwind: FrameHeaderCache reset`.  That means `FrameHeaderCache::MostRecentlyUsed` has just been set to `nullptr` ...


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D75954/new/

https://reviews.llvm.org/D75954