About the Garbage Collector

[sibest]

Hi!
I'm still using hhvm <3.30 and i've a question about the GC.

` class TestL {

public $f;

function __destruct()
{
echo 'DIE'."\r\n";
}
}

function test()
{
$r = new TestL();
$l = new TestL();
$r->f = $l;
$l->f = $r;

}

while (1)
{
for ($i = 0; $i < 1000; $i++)
test();

gc_collect_cycles();
usleep(1);
}
`

Shouldn't this code trigger the GC and free up $l and $r ? The destructor never gets called,

Thank you