[Bug 276104] [exp-run] Against llvm-18-update branch on GitHub

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=276104

--- Comment #124 from commit-hook@FreeBSD.org ---
A commit in branch stable/13 references this bug:

URL:
https://cgit.FreeBSD.org/src/commit/?id=6c596be66539299d553c77acf94db2bed63a6fc5

commit 6c596be66539299d553c77acf94db2bed63a6fc5
Author:     Dimitry Andric <dim@FreeBSD.org>
AuthorDate: 2024-02-05 09:16:17 +0000
Commit:     Dimitry Andric <dim@FreeBSD.org>
CommitDate: 2024-04-19 21:24:46 +0000

    Merge commit 5f4ee5a2dfa9 from llvm-project (by Shanzhi):

      [Clang][AST] Fix a crash on attaching doc comments (#78716)

      This crash is basically caused by calling
      `ASTContext::getRawCommentForDeclNoCacheImp` with its input arguments
      `RepresentativeLocForDecl` and `CommentsInTheFile` refering to different
      files. A reduced reproducer is provided in this patch.

      After the source locations for instantiations of funtion template are
      corrected in the commit 256a0b298c68b89688b80350b034daf2f7785b67, the
      variable `CommitsInThisFile` in the function
      `ASTContext::attachCommentsToJustParsedDecls` would refer to the source
      file rather than the header file for implicit function template
      instantiation. Therefore, in the first loop in
      `ASTContext::attachCommentsToJustParsedDecls`, `D` should also be
      adjusted for relevant scenarios like the second loop.

      Fixes #67979
      Fixes #68524
      Fixes #70550

    This should fix a segfault when compiling graphics/gdal.

    PR:             276104
    MFC after:      1 month

    (cherry picked from commit dc36515b628331e03ac8c23a6749f7f3eb1ebec8)

 contrib/llvm-project/clang/lib/AST/ASTContext.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

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