rust/tests/fail/provenance/ptr_invalid_offset.rs
2022-07-05 18:16:20 -04:00

12 lines
335 B
Rust

// compile-flags: -Zmiri-strict-provenance
// error-pattern: is a dangling pointer
#![feature(strict_provenance)]
fn main() {
let x = 22;
let ptr = &x as *const _ as *const u8;
let roundtrip = std::ptr::invalid::<u8>(ptr as usize);
// Not even offsetting this is allowed.
let _ = unsafe { roundtrip.offset(1) };
}