[clang-tools-extra] Bugfix for chosing the correct deduction guide (PR #66487)

[Erich Keane via cfe-commits]

erichkeane wrote:

> The paper where this came from is: https://wg21.link/P0620R0. most of this paper was already implemented. Where is the paper tracking doc I need to update? https://clang.llvm.org/cxx_status.html claims this paper is implemented. Sorry if the following questions are trivial, I'm new to this. In the release note should I put it under [Bug Fixes to C++ Support](https://github.com/llvm/llvm-project/blob/main/clang/docs/ReleaseNotes.rst#bug-fixes-to-c-support) or [Bug Fixes in This Version](https://github.com/llvm/llvm-project/blob/main/clang/docs/ReleaseNotes.rst#id88)?
> 
> Where should I reference the standard in the PR? In the Description?

cxx_status.html is the paper tracking doc, if we claim it was already implemented than there is nothing to do there.

For release notes, ForC++Support seems like the right area for me.

I've confirmed that P06020R0 is in N4659 (Final draft for C++17), so you're right, there is no version checking we have to do.  Thanks for doing the leg work here!


https://github.com/llvm/llvm-project/pull/66487