rust/tests/ui/layout/issue-112048-unsizing-field-order.rs
2024-02-16 20:02:50 +00:00

26 lines
493 B
Rust

//@ run-pass
// Check that unsizing doesn't reorder fields.
#![allow(dead_code)]
use std::fmt::Debug;
#[derive(Debug)]
struct GcNode<T: ?Sized> {
gets_swapped_with_next: usize,
next: Option<&'static GcNode<dyn Debug>>,
tail: T,
}
fn main() {
let node: Box<GcNode<dyn Debug>> = Box::new(GcNode {
gets_swapped_with_next: 42,
next: None,
tail: Box::new(1),
});
assert_eq!(node.gets_swapped_with_next, 42);
assert!(node.next.is_none());
}