[clang] [lldb] Serialize `#pragma redefine_extname` into precompiled headers. (PR #186755)

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dingxiangfei2009 wrote:

A quick question to @efriedma-quic, is there anyone familiar with AST serialisation or PCH that we could ask reviews from?

cc @ilovepi 


https://github.com/llvm/llvm-project/pull/186755