tree 2382fc52ffe22a9765e99db563c28de413cc6c62
parent 37d1d02200b9472082304c191f396f0489d00e05
author Joe Loser <joeloser93@gmail.com> 1642623375 -0500
committer Joe Loser <joeloser93@gmail.com> 1642909966 -0500
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[libc++] Implement LWG3549: view_interface need not inherit from view_base

Implement LWG3549 by making `view_interface` not inherit from `view_base`. Types
are still views if they have a public and unambiguous derivation from
`view_interface`, so adjust the `enable_view` machinery as such to account for
that.

Differential Revision: https://reviews.llvm.org/D117714