I would like to enable the unsafe_op_in_unsafe_fn lint by adding

#![deny(unsafe_op_in_unsafe_fn)]

to the top of src/lib.rs.

However, we can't do this right now because there are 187 instances where this is currently violated. These should be fixed and then the lint should be enabled.

Since there are many instances of this, it's acceptable to submit PRs that just fix some of them as partial progress.