[PATCH] D32385: [libcxx] Implement LWG 2900 "The copy and move constructors of optional are not constexpr"

[Casey Carter via Phabricator via cfe-commits]

CaseyCarter created this revision.

.. by injecting base classes that differentiate between trivial/non-trivial implementation of each copy/move constructor/assignment. This actually goes a bit beyond the PR by also making the copy/move assignment operators trivial when the base type has corresponding trivial construction and assignment.


https://reviews.llvm.org/D32385

Files:
  include/optional
  test/std/utilities/optional/optional.object/optional.object.ctor/copy.pass.cpp
  test/std/utilities/optional/optional.object/optional.object.ctor/move.pass.cpp

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