[all-commits] [llvm/llvm-project] 42e0cd: [Clang] Implement P2843R3 - Preprocessing is never...

[yronglin via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 42e0cdf2fcc3455d95be7d875302a0f7cb7c592d
      https://github.com/llvm/llvm-project/commit/42e0cdf2fcc3455d95be7d875302a0f7cb7c592d
  Author: yronglin <yronglin777 at gmail.com>
  Date:   2026-04-16 (Thu, 16 Apr 2026)

  Changed paths:
    M clang/docs/ReleaseNotes.rst
    M clang/include/clang/Basic/DiagnosticLexKinds.td
    M clang/lib/Lex/PPExpressions.cpp
    M clang/test/Lexer/cxx-features.cpp
    A clang/test/Preprocessor/p2843r3.cpp
    M clang/www/cxx_status.html

  Log Message:
  -----------
  [Clang] Implement P2843R3 - Preprocessing is never undefined (#192073)

This PR marks [P2843R3 - Preprocessing is never
undefined](https://wg21.link/P2843) as implemented and add tests.

Fixes https://github.com/llvm/llvm-project/issues/145658

---------

Signed-off-by: yronglin <yronglin777 at gmail.com>



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