I'd love to see what these usages are, and what motivates this. I understand that sometimes people reach for unsafe too eagerly. But the std is full of unsafe and drawing the line there sometimes seems like a line in the sand.
We use it in 3 places:
- fixing some FFI on iOS
- enabling function-call syntax for signals (took this implementation from dtolnay)
- implementing Send/Sync for an ID that uses a pointer as a hash (which honestly could be removed in lieu of a usize, now that I'm looking at it)
crate authors that try to remove all unsafe often do it to relieve the burden of trust from the user.
_this_, in my opinion, is the power of the `unsafe` keyword (which probably should have been split into `trust_me` blocks and `check_yourself` functions). it constrains the conversations about memory safety into very tightly defined and auditable locations in the code, AND it creates new, manageable conversations about trust.