[PATCH] D152747: [include-cleaner] Traverse implicit template instantations if the templates are inside the main file.

[Haojian Wu via Phabricator via cfe-commits]

hokein created this revision.
hokein added a reviewer: kadircet.
Herald added a project: All.
hokein requested review of this revision.
Herald added a project: clang-tools-extra.

This patch tweaks the WalkAST to traverse imlicit template
instantations, presumably this is a big behavior change.

when traversing impplicit instantations, all reported references are
implicit as they are not spelled in the source code, thus they are not
contributed to the #include insertions.

This would fix some unused-include false positives where we report an
 #include is unused despite the used references is in an instantiated
body.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D152747

Files:
  clang-tools-extra/include-cleaner/lib/WalkAST.cpp
  clang-tools-extra/include-cleaner/unittests/WalkASTTest.cpp

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