| 1 | fn List(comptime Head: type, comptime Tail: type) type { |
| 2 | return union { |
| 3 | const Self = @This(); |
| 4 | head: Head, |
| 5 | tail: Tail, |
| 6 | |
| 7 | fn AppendReturnType(comptime item: anytype) type { |
| 8 | return List(Head, List(@TypeOf(item), void)); |
| 9 | } |
| 10 | }; |
| 11 | } |
| 12 | |
| 13 | fn makeList(item: anytype) List(@TypeOf(item), void) { |
| 14 | return List(@TypeOf(item), void){ .head = item }; |
| 15 | } |
| 16 | |
| 17 | pub export fn entry() void { |
| 18 | @TypeOf(makeList(42)).AppendReturnType(64); |
| 19 | } |
| 20 | |
| 21 | // error |
| 22 | // |
| 23 | // :18:43: error: value of type 'type' ignored |
| 24 | // :18:43: note: all non-void values must be used |
| 25 | // :18:43: note: to discard the value, assign it to '_' |