1 #![feature(slice_patterns)]
3 fn nop(_s: &[& i32]) {}
4 fn nop_subslice(_s: &[i32]) {}
6 fn const_index_err(s: &mut [i32; 4]) {
7 let [ref first, ref second, ..] = *s;
8 let [_, ref mut second2, ref mut third, ..] = *s; //~ERROR
9 nop(&[first, second, second2, third]);
12 fn const_index_from_end_err(s: &mut [i32; 4]) {
13 let [.., ref fourth, ref third, _, ref first] = *s;
14 let [.., ref mut third2, _, _] = *s; //~ERROR
15 nop(&[first, third, third2, fourth]);
18 fn const_index_mixed(s: &mut [i32; 6]) {
19 let [.., _, ref from_end4, ref from_end3, _, ref from_end1] = *s;
21 let [_, _, ref mut from_begin2, ..] = *s; //~ERROR
22 nop(&[from_begin2, from_end1, from_end3, from_end4]);
23 let [_, _, _, ref mut from_begin3, ..] = *s; //~ERROR
24 nop(&[from_begin3, from_end1, from_end3, from_end4]);
26 let [ref from_begin0, ref from_begin1, _, ref from_begin3, _, ..] = *s;
28 let [.., ref mut from_end3, _, _] = *s; //~ERROR
29 nop(&[from_begin0, from_begin1, from_begin3, from_end3]);
32 fn const_index_and_subslice_err(s: &mut [i32; 4]) {
33 let [ref first, ref second, ..] = *s;
34 let [_, ref mut tail @ ..] = *s; //~ERROR
35 nop(&[first, second]);
39 fn const_index_and_subslice_from_end_err(s: &mut [i32; 4]) {
40 let [.., ref second, ref first] = *s;
41 let [ref mut tail @ .., _] = *s; //~ERROR
42 nop(&[first, second]);
46 fn subslices_overlap(s: &mut [i32; 4]) {
47 let [_, ref s1 @ ..] = *s;
48 let [ref mut s2 @ .., _, _] = *s; //~ERROR
54 let mut v = [1,2,3,4];
55 const_index_err(&mut v);
56 const_index_from_end_err(&mut v);
57 const_index_and_subslice_err(&mut v);
58 const_index_and_subslice_from_end_err(&mut v);
59 subslices_overlap(&mut v);