<?php
$db = new Pdo\Sqlite('sqlite::memory:');
class Canary {
public function __construct(public mixed $fusion) {}
}
function g() {
Fiber::suspend();
}
function f($canary) {
var_dump(yield from g());
}
$canary = new Canary(null);
$iterable = f($canary);
$fiber = new Fiber(function () use ($iterable, $canary) {
$f = $iterable->next(...);
$f();
});
$canary->value = $fiber;
$fiber->start();
$fiber = $iterable = $canary = null;
gc_collect_cycles();