28 lines
610 B
Rust
28 lines
610 B
Rust
|
//@ 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);
|
||
|
|
}
|