1const A = error{
 2    NotDir,
 3
 4    /// A doc comment
 5    PathNotFound,
 6};
 7const B = error{
 8    OutOfMemory,
 9
10    /// B doc comment
11    PathNotFound,
12};
13
14const C = A || B;
15
16fn foo() C!void {
17    return error.NotDir;
18}
19
20test "merge error sets" {
21    if (foo()) {
22        @panic("unexpected");
23    } else |err| switch (err) {
24        error.OutOfMemory => @panic("unexpected"),
25        error.PathNotFound => @panic("unexpected"),
26        error.NotDir => {},
27    }
28}
29
30// test