1const Foo = struct {
 2    a: i32 = 1234,
 3    b: i32,
 4};
 5
 6test "default struct initialization fields" {
 7    const x: Foo = .{
 8        .b = 5,
 9    };
10    if (x.a + x.b != 1239) {
11        comptime unreachable;
12    }
13}
14
15// test