rust/tests/fail/unaligned_pointers/unaligned_ptr4.rs
2022-07-11 11:48:56 +00:00

15 lines
550 B
Rust

// This should fail even without validation or Stacked Borrows.
//@compile-flags: -Zmiri-disable-validation -Zmiri-disable-stacked-borrows
fn main() {
// Make sure we notice when a u16 is loaded at offset 1 into a u8 allocation.
// (This would be missed if u8 allocations are *always* at odd addresses.)
//
// Try many times as this might work by chance.
for _ in 0..10 {
let x = [0u8; 4];
let ptr = x.as_ptr().wrapping_offset(1).cast::<u16>();
let _val = unsafe { *ptr }; //~ERROR: but alignment
}
}