1const X = struct {
 2    fn init() !X {
 3        return error.a;
 4    }
 5
 6    fn a(x: X) void {
 7        _ = x;
 8    }
 9};
10
11export fn entry() void {
12    const x = X.init();
13    x.a();
14}
15
16// error
17//
18// :13:6: error: no field or member function named 'a' in '@typeInfo(@typeInfo(@TypeOf(tmp.X.init)).@"fn".return_type.?).error_union.error_set!tmp.X'
19// :13:6: note: consider using 'try', 'catch', or 'if'