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

14 lines
499 B
Rust

// This should fail even without validation
// Some optimizations remove ZST accesses, thus masking this UB.
//@compile-flags: -Zmir-opt-level=0 -Zmiri-disable-validation
fn main() {
// Try many times as this might work by chance.
for i in 0..10 {
let x = i as u8;
let x = &x as *const _ as *const [u32; 0];
// This must fail because alignment is violated. Test specifically for loading ZST.
let _x = unsafe { *x }; //~ERROR: alignment 4 is required
}
}