rust/tests/ui/consts/const-compare-bytes.rs

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// 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);
}