[PATCH] D80751: [clang][diagnostics] Add '-Wundef-prefix' warning option

[Cyndy Ishida via Phabricator via cfe-commits]

This revision was automatically updated to reflect the committed changes.
Closed by commit rG89a0c4066b0e: [clang][diagnostics] Add '-Wundef-prefix' warning option (authored by zixuw, committed by cishida).

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D80751/new/

https://reviews.llvm.org/D80751

Files:
  clang/include/clang/Basic/DiagnosticLexKinds.td
  clang/include/clang/Basic/DiagnosticOptions.h
  clang/include/clang/Driver/Options.td
  clang/lib/Frontend/CompilerInvocation.cpp
  clang/lib/Lex/PPExpressions.cpp
  clang/test/Preprocessor/warn-macro-undef.c

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