1 mod safe {
2 use std::slice::from_raw_parts_mut;
3
split_at_mut<T>(self_: &mut [T], mid: usize) -> (&mut [T], &mut [T])4 pub fn split_at_mut<T>(self_: &mut [T], mid: usize) -> (&mut [T], &mut [T]) {
5 let len = self_.len();
6 let ptr = self_.as_mut_ptr();
7
8 unsafe {
9 assert!(mid <= len);
10
11 (from_raw_parts_mut(ptr, len - mid), // BUG: should be "mid" instead of "len - mid"
12 from_raw_parts_mut(ptr.offset(mid as isize), len - mid))
13 }
14 }
15 }
16
main()17 fn main() {
18 let mut array = [1,2,3,4];
19 let (a, b) = safe::split_at_mut(&mut array, 0);
20 //~^ ERROR borrow stack
21 a[1] = 5;
22 b[1] = 6;
23 }
24