[PATCH] D140587: [clang] Fix a clang crash on invalid code in C++20 mode.

[Shafik Yaghmour via Phabricator via cfe-commits]

shafik added a comment.

Thank you for the fix, can you explain the failure case in more detail and why checking that `RD` is defined is the correct fix.


Repository:
  rG LLVM Github Monorepo

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https://reviews.llvm.org/D140587