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| -rw-r--r-- | Zend/tests/bug72286.phpt | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/Zend/tests/bug72286.phpt b/Zend/tests/bug72286.phpt new file mode 100644 index 0000000000..0f6184d91c --- /dev/null +++ b/Zend/tests/bug72286.phpt @@ -0,0 +1,51 @@ +--TEST-- +Bug #72286 (Segmentation fault During Garbage Collection) +--FILE-- +<?php +class SegfaultScenario +{ + private $circular_reference; + private $object; + + public function __construct() + { + $this->circular_reference = $this; + $this->object = new \stdClass(); + } + + public function __destruct() + { + // we try to avoid accessing $this->object by returning early but the object exists + if (!$this->object) { // without this expression involving the object, the segfault does not happen + var_dump('the object exists'); + return; + } + + var_dump('segfaults here:'); + // and then access the object (which seemingly has already been garbage collected) + var_dump($this->object); + var_dump('will not get here'); + } +} + +class SomeContainer +{ + public function run() + { + new SegfaultScenario(); + } +} + +$container = new SomeContainer(); +$container->run(); + +var_dump('we are about to segfault'); +gc_collect_cycles(); +var_dump('will not get here'); +--EXPECTF-- +string(24) "we are about to segfault" +string(15) "segfaults here:" +object(stdClass)#%d (0) { +} +string(17) "will not get here" +string(17) "will not get here" |