tree a749718c034e8d310132129bf81a854d539c50c1
parent 6ad335bfc0e0aa07d25575d915897fa95cf7f974
author Eric Fiselier <eric@efcs.ca> 1492284722 +0000
committer Eric Fiselier <eric@efcs.ca> 1492284722 +0000

Implement LWG 2857 for variant. Tests from Casey Carter @ Microsoft.

Also mark LWG 2857 as complete, since the changes to optional and
any were completed by Marshall earlier.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@300403 91177308-0d34-0410-b5e6-96231b3b80d8