Fix PR22000. __bit_iterator::move_backwards. Also make a note that __bit_iterator
is quite underrepresented in the libc++ tests suite.


git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@224723 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed