Add a test for LWG#3204 and mark it as complete. Reviewed as https://reviews.llvm.org/D61829  Thanks to Zoe for the patch.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@360586 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed