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// run-pass
#![allow(non_camel_case_types)]
#![allow(dead_code)]
use std::cell::Cell;
// Resources can't be copied, but storing into data structures counts
// as a move unless the stored thing is used afterwards.
struct r<'a> {
i: &'a Cell<isize>,
}
struct BoxR<'a> { x: r<'a> }
impl<'a> Drop for r<'a> {
fn drop(&mut self) {
self.i.set(self.i.get() + 1)
}
}
fn r(i: &Cell<isize>) -> r {
r {
i: i
}
}
fn test_rec() {
let i = &Cell::new(0);
{
let _a = BoxR {x: r(i)};
}
assert_eq!(i.get(), 1);
}
fn test_tag() {
enum t<'a> {
t0(r<'a>),
}
let i = &Cell::new(0);
{
let _a = t::t0(r(i));
}
assert_eq!(i.get(), 1);
}
fn test_tup() {
let i = &Cell::new(0);
{
let _a = (r(i), 0);
}
assert_eq!(i.get(), 1);
}
fn test_unique() {
let i = &Cell::new(0);
{
let _a: Box<_> = Box::new(r(i));
}
assert_eq!(i.get(), 1);
}
fn test_unique_rec() {
let i = &Cell::new(0);
{
let _a: Box<_> = Box::new(BoxR {
x: r(i)
});
}
assert_eq!(i.get(), 1);
}
pub fn main() {
test_rec();
test_tag();
test_tup();
test_unique();
test_unique_rec();
}
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