Final bit for LWG #2263; test different allocator pointer types. Note that libc++ already does the right thing here; I've just added tests to ensure that it stays this way.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@203539 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed