4 #![allow(non_snake_case)]
20 fn mk_rec<A,B>(a: A, b: B) -> Rec<A,B> {
21 Rec { chA:0, tA:Tag::VarA(a), chB:1, tB:Tag::VarB(b) }
24 fn is_aligned<A>(amnt: usize, u: &A) -> bool {
25 let p: usize = unsafe { mem::transmute(u) };
26 return (p & (amnt-1)) == 0;
29 fn variant_data_is_aligned<A,B>(amnt: usize, u: &Tag<A,B>) -> bool {
31 &Tag::VarA(ref a) => is_aligned(amnt, a),
32 &Tag::VarB(ref b) => is_aligned(amnt, b)
37 let u64_align = std::mem::min_align_of::<u64>();
38 let x = mk_rec(22u64, 23u64);
39 assert!(is_aligned(u64_align, &x.tA));
40 assert!(variant_data_is_aligned(u64_align, &x.tA));
41 assert!(is_aligned(u64_align, &x.tB));
42 assert!(variant_data_is_aligned(u64_align, &x.tB));
44 let x = mk_rec(22u64, 23u32);
45 assert!(is_aligned(u64_align, &x.tA));
46 assert!(variant_data_is_aligned(u64_align, &x.tA));
47 assert!(is_aligned(u64_align, &x.tB));
48 assert!(variant_data_is_aligned(4, &x.tB));
50 let x = mk_rec(22u32, 23u64);
51 assert!(is_aligned(u64_align, &x.tA));
52 assert!(variant_data_is_aligned(4, &x.tA));
53 assert!(is_aligned(u64_align, &x.tB));
54 assert!(variant_data_is_aligned(u64_align, &x.tB));
56 let x = mk_rec(22u32, 23u32);
57 assert!(is_aligned(4, &x.tA));
58 assert!(variant_data_is_aligned(4, &x.tA));
59 assert!(is_aligned(4, &x.tB));
60 assert!(variant_data_is_aligned(4, &x.tB));
62 let x = mk_rec(22f64, 23f64);
63 assert!(is_aligned(u64_align, &x.tA));
64 assert!(variant_data_is_aligned(u64_align, &x.tA));
65 assert!(is_aligned(u64_align, &x.tB));
66 assert!(variant_data_is_aligned(u64_align, &x.tB));