[PATCH] D145256: [clang/Diagnostic] Use `optional` to disambiguate between a `StoredDiagMessage` that is not set vs set as empty string

Mon Mar 6 22:59:26 PST 2023

akyrtzi added a comment.

> Is this observable from a clang command line tool? Be nice to have a lit test.

Added lit test here: https://reviews.llvm.org/D145473

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D145256/new/

https://reviews.llvm.org/D145256