1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
|
// run-pass
#![feature(core_intrinsics)]
#![feature(const_intrinsic_compare_bytes)]
use std::intrinsics::compare_bytes;
fn main() {
const A: i32 = unsafe {
compare_bytes(1 as *const u8, 2 as *const u8, 0)
};
assert_eq!(A, 0);
const B: i32 = unsafe {
compare_bytes([1, 2].as_ptr(), [1, 3].as_ptr(), 1)
};
assert_eq!(B, 0);
const C: i32 = unsafe {
compare_bytes([1, 2, 9].as_ptr(), [1, 3, 8].as_ptr(), 2)
};
assert!(C < 0);
const D: i32 = unsafe {
compare_bytes([1, 3, 8].as_ptr(), [1, 2, 9].as_ptr(), 2)
};
assert!(D > 0);
}
|