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Core dumped in Zend/zend_generators.c #15866
Description
Description
The following code:
<?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();Resulted in this output:
/php-src/Zend/zend_generators.c:218: check_node_running_in_fiber: Assertion `(executor_globals.flags) & (1<<0)' failed.
Aborted (core dumped)
PHP Version
PHP 8.4.0-dev
Operating System
ubuntu 22.04
Activity
DanielEScherzer commentedon Sep 17, 2024
Minimal reproduction:
Even removing the Sqlite database is enough for this to not fail, maybe that should be tagged with that label?
ndossche commentedon Sep 17, 2024
No, it seems you just need something that triggers a get_gc handler, and Pdo\Sqlite has a custom get_gc. So it's not directly related to that class.
Anyway, cc @arnaud-lb since this code is his domain.
arnaud-lb commentedon Sep 24, 2024
Indeed. The
get_gchandler has the effect of changing the traversal order of the graph, and so of the dtor order.arnaud-lb commentedon Oct 2, 2024
Fixed by #16025.
Thank you @YuanchengJiang!