[PATCH] D120498: [AST] Test RecursiveASTVisitor's current traversal of templates.

[Sam McCall via Phabricator via cfe-commits]

sammccall created this revision.
sammccall added reviewers: hokein, nridge.
Herald added subscribers: usaxena95, kadircet, mgorny.
sammccall requested review of this revision.
Herald added subscribers: cfe-commits, ilya-biryukov.
Herald added a project: clang.

There are several logical inconsistencies and traps in the current traversal.

This doesn't fix any of them, but

- describes the general expectations of how templates should be traversed
- (mostly) exhaustively records current behavior as a baseline for changes
- lists the apparent bugs in current behavior

See https://github.com/clangd/clangd/issues/1034 for an example of reasonable
code that falls into one of the traps, and some discussion.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D120498

Files:
  clang/unittests/Tooling/CMakeLists.txt
  clang/unittests/Tooling/RecursiveASTVisitorTests/Templates.cpp
  clang/unittests/Tooling/TestVisitor.h

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