[PATCH] D123909: [Clang] Use of decltype(capture) in parameter-declaration-clause

[Richard Smith - zygoloid via Phabricator via cfe-commits]

rsmith added a comment.

In D123909#3462560 <https://reviews.llvm.org/D123909#3462560>, @aaron.ballman wrote:

> This looks like a true positive to me, at least for the moment (Core is still trying to decide what to do about CWG2569 which may relax some restrictions in this area).
>
> @MaskRay -- your revert was incorrect, please un-revert.

It sounds to me like this change is causing a substantial amount of breakage for real code, which might suggest that applying it retroactively by default is not in the best interests of our users. I think we need more information here on the scope of the breakages, but it might make sense to suggest that CWG reconsiders treating this as a DR.


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https://reviews.llvm.org/D123909