<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/61426>61426</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Clang C++20 Feature: P0588R1 - Simplifying implicit lambda capture
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            new issue
      </td>
    </tr>

    <tr>
      <th>Assignees</th>
      <td>
      </td>
    </tr>

    <tr>
      <th>Reporter</th>
      <td>
          h-vetinari
      </td>
    </tr>
</table>

<pre>
    id: P0588R1
paper: https://wg21.link/P0588R1

This paper doesn't have a tracking issue in the [C++20 project](https://github.com/orgs/llvm/projects/14/views/1) yet[^1]. It also shows up on the cppreference [implementation status page](https://en.cppreference.com/w/cpp/compiler_support), and presumably should be tracked in https://clang.llvm.org/cxx_status.html (like other DRs that have a Pxxxx).

[^1]: It's obviously questionable to call this a "C++20 Feature", but I'm following the pattern of the other paper-tracking issues.

I found some related issues[^2], but none dedicated to this:
* https://github.com/llvm/llvm-project/issues/58872
* https://github.com/llvm/llvm-project/issues/44851
* https://github.com/llvm/llvm-project/issues/37673
* https://github.com/llvm/llvm-project/issues/34771

[^2]: curiously, GH search found nothing for "P0588", but did find something for "P0588R1"

Most recently, @erichkeane wrote in #58872:
> DR status is tracked here : https://clang.llvm.org/cxx_dr_status.html
> 
> So it would be tracked there as [CWG1632](https://wg21.link/cwg1632) and [CWG1913](https://wg21.link/cwg1913).
> 
> From the looks of it, implementation will likely quickly get into a "thar be dragons" part of the compiler. We need to suppress instantiation of the body of dependent lambdas (the easy part), but getInstantiationArgs likely needs updating for it (which is a function that had some serious problems) to properly handle this and other cases.

This was followed by https://reviews.llvm.org/D138148 (open) & https://reviews.llvm.org/D137244 (merged). In the latter, @cor3ntin notes: 
> Either way, I think this makes support for P0588 complete, but we probably want to add a test for that in a separate PR.
> (and I lack confidence I understand P0588 sufficiently to assert the completeness of our conformance).


</pre>
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