(`offset` intrinsic), with
the exception of one byte past the end which is permitted.
* Using `std::ptr::copy_nonoverlapping_memory` (`memcpy32`/`memcpy64`
- instrinsics) on overlapping buffers
+ intrinsics) on overlapping buffers
* Invalid values in primitive types, even in private fields/locals:
* Dangling/null references or boxes
* A value other than `false` (0) or `true` (1) in a `bool`