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//@ run-fail
//@ compile-flags: -Copt-level=3 -Cdebug-assertions=no -Zub-checks=yes
//@ error-pattern: unsafe precondition(s) violated: ptr::swap_nonoverlapping requires
//@ revisions: null_src null_dst misaligned_src misaligned_dst overlapping
use std::ptr;
fn main() {
let mut src = [0u16; 3];
let mut dst = [0u16; 3];
let src = src.as_mut_ptr();
let dst = dst.as_mut_ptr();
unsafe {
#[cfg(null_src)]
ptr::swap_nonoverlapping(ptr::null_mut(), dst, 1);
#[cfg(null_dst)]
ptr::swap_nonoverlapping(src, ptr::null_mut(), 1);
#[cfg(misaligned_src)]
ptr::swap_nonoverlapping(src.byte_add(1), dst, 1);
#[cfg(misaligned_dst)]
ptr::swap_nonoverlapping(src, dst.byte_add(1), 1);
#[cfg(overlapping)]
ptr::swap_nonoverlapping(dst, dst.add(1), 2);
}
}
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