whisperity added a comment.

In D106431#2907002 <https://reviews.llvm.org/D106431#2907002>, @Sockke wrote:

> Any thoughts?  : )

First, let's first fix that we should still warn for the uninitialised `enum` 
case, without a FixIt. That's the issue at hand, right now, Clang-Tidy 
generates, as you identified, broken output. We can discuss the later steps 
after this is fixed. Please implement this logic, and update the patch, so we 
have a snapshot of how that would look like and the thing working.

Afterwards, as Aaron suggested:

In D106431#2896441 <https://reviews.llvm.org/D106431#2896441>, @aaron.ballman 
wrote:

> for enumerations, we could issue up to two fix-its on a note, one for the 
> first and one for the last enumerator in an enumeration (and if the enum only 
> contains one enumerator, there's only one fix-it to generate which suggests 
> it could be on the warning rather than a note, but that seems like a lot of 
> trouble for an unlikely scenario). However, I don't recall how clang-tidy 
> interacts with fix-its on notes off the top of my head, so I'm making an 
> assumption that clang-tidy's automatic fixit applying mode handles notes the 
> same way as clang and we should double-check that assumption.

This might require nontrivial changes to the check's code, and investigating 
the potential problem with automated fix-it application when multiple 
conflicting fix-its are given on a **note** (not a //warning// line).

I think we all would be fine with only doing the first step (reintroduce the 
warning, without a fixit) in this patch, so it can be merged and hit the the 
mainline code quickly. The next step can be its own patch. 🙂

----

In addition, I wager that adding a line about this fix to the release notes at 
`clang-tools-extra/docs/ReleaseNotes.rst` is a good option, I can imagine 
people having turned this check off due to it being broken on enums.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D106431/new/

https://reviews.llvm.org/D106431

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