[libcxx-commits] [PATCH] D58617: Implement deduction guides for <unordered_set>

[Arthur O'Dwyer via Phabricator via libcxx-commits]

Quuxplusone created this revision.
Quuxplusone added a reviewer: mclow.lists.
Herald added subscribers: libcxx-commits, ldionne.

In this case (alone) I needed to make `allocator_type`, `hasher`, and `key_equal` opaque to deduction using the `__identity` metafunction. With the original non-opaque aliases, some of the implicit deduction guides from `unordered_set`'s constructors were interfering with deduction from the explicit deduction guides.

What's strange is that I did *not* run into this problem with `unordered_map`.


Repository:
  rCXX libc++

https://reviews.llvm.org/D58617

Files:
  include/unordered_set
  test/std/containers/unord/unord.multiset/unord.multiset.cnstr/deduct.fail.cpp
  test/std/containers/unord/unord.multiset/unord.multiset.cnstr/deduct.pass.cpp
  test/std/containers/unord/unord.set/unord.set.cnstr/deduct.fail.cpp
  test/std/containers/unord/unord.set/unord.set.cnstr/deduct.pass.cpp

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