1const S = struct {};
 2const sentinel: S = .{};
 3
 4comptime {
 5    _ = [0:sentinel]S;
 6}
 7comptime {
 8    _ = [:sentinel]S;
 9}
10comptime {
11    _ = [*:sentinel]S;
12}
13
14comptime {
15    _ = @Pointer(.slice, .{}, S, sentinel);
16}
17comptime {
18    _ = @Pointer(.many, .{}, S, sentinel);
19}
20
21// error
22//
23// :5:12: error: non-scalar sentinel type 'tmp.S'
24// :1:11: note: struct declared here
25// :8:11: error: non-scalar sentinel type 'tmp.S'
26// :1:11: note: struct declared here
27// :11:12: error: non-scalar sentinel type 'tmp.S'
28// :1:11: note: struct declared here
29// :15:34: error: non-scalar sentinel type 'tmp.S'
30// :1:11: note: struct declared here
31// :18:33: error: non-scalar sentinel type 'tmp.S'
32// :1:11: note: struct declared here