[clang] [AST] Iterate redecls starting from the canonical one in getRawCommentsForAnyRedecl() (PR #108475)

[Nathan Ridge via cfe-commits]

HighCommander4 wrote:

@zyn0217 Thank you for the analysis and suggestion! I updated the patch as suggested, let's see what buildkite says.

https://github.com/llvm/llvm-project/pull/108475