rust/tests/compile-fail/alignment.rs
2018-10-19 12:29:49 +02:00

12 lines
448 B
Rust

fn main() {
// miri always gives allocations the worst possible alignment, so a `u8` array is guaranteed
// to be at the virtual location 1 (so one byte offset from the ultimate alignemnt location 0)
let mut x = [0u8; 20];
let x_ptr: *mut u8 = &mut x[0];
let y_ptr = x_ptr as *mut u64;
unsafe {
*y_ptr = 42; //~ ERROR tried to access memory with alignment 1, but alignment
}
panic!("unreachable in miri");
}