rust/tests/compile-fail/unaligned_pointers/unaligned_ptr4.rs

13 lines
538 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.)
for _ in 0..10 { // Try many times as this might work by chance.
let x = [0u8; 4];
let ptr = x.as_ptr().wrapping_offset(1).cast::<u16>();
let _val = unsafe { *ptr }; //~ERROR but alignment
}
}