rust/src/test/run-pass/destructor-ordering.rs

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// We share an instance of this type among all the destructor-order
// checkers. It tracks how many destructors have run so far and
// 'fail's when one runs out of order.
// FIXME: Make it easier to collect a failure message.
state obj order_tracker(mutable int init) {
fn assert_order(int expected, str fail_message) {
if (expected != init) {
log expected;
log " != ";
log init;
log fail_message;
fail;
}
init += 1;
}
}
obj dorder(@order_tracker tracker, int order, str message) {
drop {
tracker.assert_order(order, message);
}
}
fn main() {
auto tracker = @order_tracker(0);
dorder(tracker, 1, "Reverse decl order");
dorder(tracker, 0, "Reverse decl order");
}