mirror of https://github.com/rust-lang/rust
42 lines
1.5 KiB
Rust
42 lines
1.5 KiB
Rust
//@ check-fail
|
|
|
|
#![feature(core_intrinsics)]
|
|
#![feature(const_intrinsic_compare_bytes)]
|
|
use std::intrinsics::compare_bytes;
|
|
use std::mem::MaybeUninit;
|
|
|
|
fn main() {
|
|
const LHS_NULL: i32 = unsafe {
|
|
compare_bytes(0 as *const u8, 2 as *const u8, 0)
|
|
//~^ ERROR evaluation of constant value failed
|
|
};
|
|
const RHS_NULL: i32 = unsafe {
|
|
compare_bytes(1 as *const u8, 0 as *const u8, 0)
|
|
//~^ ERROR evaluation of constant value failed
|
|
};
|
|
const DANGLING_PTR_NON_ZERO_LENGTH: i32 = unsafe {
|
|
compare_bytes(1 as *const u8, 2 as *const u8, 1)
|
|
//~^ ERROR evaluation of constant value failed
|
|
};
|
|
const LHS_OUT_OF_BOUNDS: i32 = unsafe {
|
|
compare_bytes([1, 2, 3].as_ptr(), [1, 2, 3, 4].as_ptr(), 4)
|
|
//~^ ERROR evaluation of constant value failed
|
|
};
|
|
const RHS_OUT_OF_BOUNDS: i32 = unsafe {
|
|
compare_bytes([1, 2, 3, 4].as_ptr(), [1, 2, 3].as_ptr(), 4)
|
|
//~^ ERROR evaluation of constant value failed
|
|
};
|
|
const LHS_UNINIT: i32 = unsafe {
|
|
compare_bytes(MaybeUninit::uninit().as_ptr(), [1].as_ptr(), 1)
|
|
//~^ ERROR evaluation of constant value failed
|
|
};
|
|
const RHS_UNINIT: i32 = unsafe {
|
|
compare_bytes([1].as_ptr(), MaybeUninit::uninit().as_ptr(), 1)
|
|
//~^ ERROR evaluation of constant value failed
|
|
};
|
|
const WITH_PROVENANCE: i32 = unsafe {
|
|
compare_bytes([&1].as_ptr().cast(), [&2].as_ptr().cast(), std::mem::size_of::<usize>())
|
|
//~^ ERROR evaluation of constant value failed
|
|
};
|
|
}
|