26 let mut it = vec![137].into_iter();
27 let itr: &mut vec::IntoIter<u32> = &mut it;
28 assert_eq!((itr as &mut dyn Iterator<Item=u32>).next(), Some(137));
29 assert_eq!((itr as &mut dyn Iterator<Item=u32>).next(), None);
31 assert_eq!(Some(4u32) as Option<u32>, Some(4u32));
32 assert_eq!((1u32,2u32) as (u32,u32), (1,2));
34 // this isn't prim-int-cast. Check that it works.
35 assert_eq!(false as bool, false);
36 assert_eq!(true as bool, true);
39 let l: u64 = 0x8090a0b0c0d0e0f0;
40 let lsz: usize = l as usize;
41 assert_eq!(l as u32, 0xc0d0e0f0);
44 assert_eq!(l as u8, 0xf0);
45 assert_eq!(l as i8,-0x10);
46 assert_eq!(l as u32, 0xc0d0e0f0);
47 assert_eq!(l as u32 as usize as u32, l as u32);
48 assert_eq!(l as i32,-0x3f2f1f10);
49 assert_eq!(l as i32 as isize as i32, l as i32);
50 assert_eq!(l as i64,-0x7f6f5f4f3f2f1f10);
52 assert_eq!(0 as f64, 0f64);
53 assert_eq!(1 as f64, 1f64);
55 assert_eq!(l as f64, 9264081114510712022f64);
57 assert_eq!(l as i64 as f64, -9182662959198838444f64);
58 // float overflow : needs fixing
59 // assert_eq!(l as f32 as i64 as u64, 9264082620822882088u64);
60 // assert_eq!(l as i64 as f32 as i64, 9182664080220408446i64);
62 assert_eq!(4294967040f32 as u32, 0xffffff00u32);
63 assert_eq!(1.844674407370955e19f64 as u64, 0xfffffffffffff800u64);
65 assert_eq!(9.223372036854775e18f64 as i64, 0x7ffffffffffffc00i64);
66 assert_eq!(-9.223372036854776e18f64 as i64, 0x8000000000000000u64 as i64);
68 // addr-ptr-cast/ptr-addr-cast (thin ptr)
69 let p: *const [u8; 1] = lsz as *const [u8; 1];
70 assert_eq!(p as usize, lsz);
72 // ptr-ptr-cast (thin ptr)
73 let w: *const () = p as *const ();
74 assert_eq!(w as usize, lsz);
76 // ptr-ptr-cast (fat->thin)
77 let u: *const [u8] = unsafe{&*p};
78 assert_eq!(u as *const u8, p as *const u8);
79 assert_eq!(u as *const u16, p as *const u16);
81 // ptr-ptr-cast (Length vtables)
82 let mut l : [u8; 2] = [0,1];
83 let w: *mut [u16; 2] = &mut l as *mut [u8; 2] as *mut _;
84 let w: *mut [u16] = unsafe {&mut *w};
85 let w_u8 : *const [u8] = w as *const [u8];
86 assert_eq!(unsafe{&*w_u8}, &l);
88 let s: *mut str = w as *mut str;
89 let l_via_str = unsafe{&*(s as *const [u8])};
90 assert_eq!(&l, l_via_str);
92 // ptr-ptr-cast (Length vtables, check length is preserved)
93 let l: [[u8; 3]; 2] = [[3, 2, 6], [4, 5, 1]];
94 let p: *const [[u8; 3]] = &l;
95 let p: &[[u8; 2]] = unsafe {&*(p as *const [[u8; 2]])};
96 assert_eq!(p, [[3, 2], [6, 4]]);
99 assert_eq!(Simple::A as u8, 0);
100 assert_eq!(Simple::B as u8, 1);
102 assert_eq!(Valued::H8 as i8, -93);
103 assert_eq!(Valued::H7 as i8, 67);
104 assert_eq!(Valued::Z as i8, 0);
106 assert_eq!(Valued::H8 as u8, 163);
107 assert_eq!(Valued::H7 as u8, 67);
108 assert_eq!(Valued::Z as u8, 0);
110 assert_eq!(Valued::H8 as u16, 163);
111 assert_eq!(Valued::Z as u16, 0);
112 assert_eq!(Valued::H8 as u16, 163);
113 assert_eq!(Valued::Z as u16, 0);
115 assert_eq!(ValuedSigned::M1 as u16, 65535);
116 assert_eq!(ValuedSigned::M1 as i16, -1);
117 assert_eq!(ValuedSigned::P1 as u16, 1);
118 assert_eq!(ValuedSigned::P1 as i16, 1);
121 assert_eq!(false as u16, 0);
122 assert_eq!(true as u16, 1);
123 assert_eq!(false as i64, 0);
124 assert_eq!(true as i64, 1);
125 assert_eq!('a' as u32, 0x61);
126 assert_eq!('a' as u16, 0x61);
127 assert_eq!('a' as u8, 0x61);
128 assert_eq!('א' as u8, 0xd0);
129 assert_eq!('א' as u16, 0x5d0);
130 assert_eq!('א' as u32, 0x5d0);
131 assert_eq!('🐵' as u8, 0x35);
132 assert_eq!('🐵' as u16, 0xf435);
133 assert_eq!('🐵' as u32, 0x1f435);
134 assert_eq!('英' as i16, -0x7d0f);
135 assert_eq!('英' as u16, 0x82f1);
138 assert_eq!(0x61 as char, 'a');
139 assert_eq!(0u8 as char, '\0');
140 assert_eq!(0xd7 as char, '×');
144 let first : *const u32 = &x[0];
146 assert_eq!(first, &x as *const _);
147 assert_eq!(first, &x as *const u32);
157 assert!(foo as usize != bar as usize);
159 // Taking a few bits of a function's address is totally pointless and we detect that
160 // Disabling the lint to ensure that the assertion can still be run
163 assert_eq!(foo as i16, foo as usize as i16);
168 assert_eq!(foo as *const u8 as usize, foo as usize);
169 assert!(foo as *const u32 != first);