Method get_raw_mut

cranelift/entity/src/primary.rs:234–243

Analog of `get_raw` except that a raw pointer is returned rather than a mutable reference. The default accessors of items in [`PrimaryMap`] will invalidate all previous borrows obtained from the map according to miri. This function can be used to acquire a pointer and then subsequently acquire a second pointer later on without invalidating the first one. In other words this is only here to help b

(&mut self, k: K)

    /// pointer later on without invalidating the first one. In other words
    /// this is only here to help borrow two elements simultaneously with miri.
    pub fn get_raw_mut(&mut self, k: K) -> Option<*mut V> {
        if k.index() < self.elems.len() {
            // SAFETY: the `add` function requires that the index is in-bounds
            // with respect to the allocation which is satisfied here due to
            // the bounds-check above.
            unsafe { Some(self.elems.as_mut_ptr().add(k.index())) }
        } else {
            None
        }
    }
}

impl<K, V> Default for PrimaryMap<K, V>