Maybe unsound in as_bytes

[lwz23]

cosmwasm/packages/std/src/memory.rs

Line 105 in b5ee955

unsafe { slice::from_raw_parts(self.offset as *const u8, self.length as usize) }

pub fn as_bytes(&self) -> &[u8] {
        unsafe { slice::from_raw_parts(self.offset as *const u8, self.length as usize) }
    }

I'm not sure if this code has an unsound problem, but it calls from_raw_parts without any checks. Although memory is a private mod, I decided to report the issue because I didn't see any //SAFETY to indicate this.

[chipshort]

I'm pretty sure it's not unsound because the only way we create the Regions is from a Vec or from a slice which both should fulfill all the safety requirements.
But it's always a good idea to document this.