[all-commits] [llvm/llvm-project] 4551e5: [clang] Reset FileID based diag state mappings (#1...

[kadir çetinkaya via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 4551e5035565606eb04253a35f31d51685657436
      https://github.com/llvm/llvm-project/commit/4551e5035565606eb04253a35f31d51685657436
  Author: kadir çetinkaya <kadircet at google.com>
  Date:   2025-06-12 (Thu, 12 Jun 2025)

  Changed paths:
    M clang/include/clang/Basic/Diagnostic.h
    M clang/lib/Basic/Diagnostic.cpp
    M clang/lib/Basic/SourceManager.cpp
    M clang/unittests/Frontend/CompilerInstanceTest.cpp

  Log Message:
  -----------
  [clang] Reset FileID based diag state mappings (#143695)

When sharing same compiler instance for multiple compilations, we reset
source manager's file id tables in between runs. Diagnostics engine
keeps a cache based on these file ids, that became dangling references
across compilations.

This patch makes sure we reset those whenever sourcemanager is trashing
its FileIDs.



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