rust/tests/compile-fail/copy_unaligned.rs

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2018-09-16 09:47:37 -05:00
//error-pattern: tried to access memory with alignment 1, but alignment 2 is required
fn main() {
let mut data = [0u16; 8];
let ptr = (&mut data[0] as *mut u16 as *mut u8).wrapping_add(1) as *mut u16;
// Even copying 0 elements to something unaligned should error
unsafe { ptr.copy_from(&data[5], 0); }
}