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|
//@ run-pass
// Test to make sure the destructors run in the right order.
// Each destructor sets it's tag in the corresponding entry
// in ORDER matching up to when it ran.
// Correct order is: matched, inner, outer
// FIXME(static_mut_refs): Do not allow `static_mut_refs` lint
#![allow(static_mut_refs)]
static mut ORDER: [usize; 3] = [0, 0, 0];
static mut INDEX: usize = 0;
struct A;
impl Drop for A {
fn drop(&mut self) {
unsafe {
ORDER[INDEX] = 1;
INDEX = INDEX + 1;
}
}
}
struct B;
impl Drop for B {
fn drop(&mut self) {
unsafe {
ORDER[INDEX] = 2;
INDEX = INDEX + 1;
}
}
}
struct C;
impl Drop for C {
fn drop(&mut self) {
unsafe {
ORDER[INDEX] = 3;
INDEX = INDEX + 1;
}
}
}
fn main() {
{
let matched = A;
let _outer = C;
{
match matched {
_s => {}
}
let _inner = B;
}
}
unsafe {
let expected: &[_] = &[1, 2, 3];
assert_eq!(expected, ORDER);
}
}
|
