Hahnfeld added a comment.

In D142196#4077708 <https://reviews.llvm.org/D142196#4077708>, @jansvoboda11 
wrote:

> Yes, I meant the `pp-trace` docs. Why would "we didn't find the included 
> file" not be a traceable event?

My thinking is the following: If the preprocessor cannot find the included file 
and the Hook doesn't return `true`, it will run into a fatal error and stop 
parsing the source file. I don't know if that's actually a relevant case, but I 
have no experience with `pp-trace`, so maybe?


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D142196/new/

https://reviews.llvm.org/D142196

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