With a max_load_factor of 1.0, the only guarantee is that bucket_count() >= size(). (Note: setting max_load_factor without rehashing isn't supposed to affect this, because setting max_load_factor is currently specified to be constant time.) git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@286982 91177308-0d34-0410-b5e6-96231b3b80d8