[all-commits] [llvm/llvm-project] 2cd778: [clangd] Replay macro definitions from preamble fo...

[Qixi via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 2cd778c2064c98980215f4a93c3036b7fe3722a3
      https://github.com/llvm/llvm-project/commit/2cd778c2064c98980215f4a93c3036b7fe3722a3
  Author: Qixi <tjx2361869673 at gmail.com>
  Date:   2026-06-17 (Wed, 17 Jun 2026)

  Changed paths:
    M clang-tools-extra/clangd/ParsedAST.cpp
    M clang-tools-extra/clangd/unittests/ReplayPeambleTests.cpp

  Log Message:
  -----------
  [clangd] Replay macro definitions from preamble for clang-tidy checks (#202495)

Clang-tidy checkers observe preprocessor events via PPCallbacks. When
using a preamble, macro definitions in the preamble region of the main
file are not replayed during the main-file build, causing checkers like
bugprone-reserved-identifier to miss them.

This patch extends ReplayPreamble::replay() to also replay MacroDefined
events for macros defined directly in the preamble region of the open
file, similar to how InclusionDirective events are already replayed.

Fixes: https://github.com/clangd/clangd/issues/2501



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