| --TEST-- | |
| Bug #70805 (Segmentation faults whilst running Drupal 8 test suite) | |
| --FILE-- | |
| class A { | |
| public $b; | |
| } | |
| class B { | |
| public $a; | |
| } | |
| class C { | |
| public function __destruct() { | |
| if (isset($GLOBALS["a"])) { | |
| unset($GLOBALS["array"]); | |
| unset($GLOBALS["a"]); // this will be called in gc_collect_roots and put $a into gc roots buf | |
| } | |
| } | |
| } | |
| $a = new A; | |
| $a->b = new B; | |
| $a->b->a = $a; | |
| $i = 0; | |
| $c = new A; | |
| $array = array($c); //This is used to leave a room for $GLOBALS["a"] | |
| unset($c); | |
| while ($i++ < 9998) { | |
| $t = []; | |
| $t[] = &$t; | |
| unset($t); | |
| } | |
| $t = [new C]; | |
| $t[] = &$t; | |
| unset($t); // This is used to trigger C::__destruct while doing gc_collect_roots | |
| $e = $a; | |
| unset($a); // This one cannot be put into roots buf because it's full, thus gc_collect_roots will be called, | |
| // but C::__destructor which is called in gc_collect_roots will put $a into buf | |
| // which will make $a be put into gc roots buf twice | |
| var_dump(gc_collect_cycles()); | |
| --EXPECT-- | |
| int(0) | |