[clang] [clang] Distinguish unresolved templates in UnresolvedLookupExpr (PR #89019)

[Younan Zhang via cfe-commits]

zyn0217 wrote:

@jyu2-git Are you sure this is the patch you’re looking for? The diagnostic there is completely unrelated and I think the right patch is https://github.com/llvm/llvm-project/pull/90152.

https://github.com/llvm/llvm-project/pull/89019