Hi PhalconPHP!
My PhalconPHP 2.1.0-RC1 application was working fine, until I started interacting with models. Now, any code that uses a model causes the application to crash with a segmentation fault:
$ tail /var/log/apache2/error.log
[Sun Apr 24 17:56:33.085807 2016] [core:notice] [pid 17024] AH00051: child pid 17065 exit signal Segmentation fault (11), possible coredump in /etc/apache2Apparently, there is a known issue with models and segmentation faults, which is related to PHP 7 test related issues. However, I'm new to PhalconPHP, and I want to be sure I'm not missing something stupid before I submit an issue on Github.
I'm using the following software:
- Ubuntu 14.04 (last
apt-get update && apt-get upgrade4/24/16) - Apache 2.4.12
- MySQL 5.6.30
- PHP 7.0.5
- Zephir 0.9.2a-dev
- Phalcon 2.1.0-RC1 (last
git pullandzephir build4/24/16)
I have a groups table:
mysql> SHOW CREATE TABLE `groups`;
CREATE TABLE `groups` (
`id` tinyint(3) unsigned NOT NULL AUTO_INCREMENT,
`name` varchar(15) NOT NULL,
PRIMARY KEY (`id`),
UNIQUE KEY `ux_name` (`name`)
) ENGINE=InnoDB AUTO_INCREMENT=3 DEFAULT CHARSET=utf8The groups table has a few groups:
mysql> SELECT * FROM groups;
+----+------+
| id | name |
+----+------+
| 2 | foo |
| 1 | bar |
+----+------+
2 rows in set (0.05 sec)I have a Group model:
<?php
namespace App\Model;
/**
* A group
*/
class Group extends \Phalcon\Mvc\Model
{
/* !Private properties */
/**
* @var int the group's id
*/
private $id;
/**
* @var string the group's *unique* name (lower-case and plural by convention)
*/
private $name;
/* !Get methods */
/**
* Returns the group's id
*
* @return int
*/
public function getId(): int
{
return $this->id;
}
/**
* Returns the group's name
*
* @return string
*/
public function getName(): string
{
return $this->name;
}
/* !Set methods */
/**
* Sets the group's name
*
* @param string $name
* @return self
*/
public function setName(string $name): self
{
$this->name = strtolower($name);
return $this;
}
/* !Magic methods */
/**
* Called to initialize the model
*
* @return self
*/
public function initialize(): self
{
$this->setSource('groups');
return $this;
}
}
I added App\Model\Group::findFirst(1) to my index.php (of course, it doesn't live here normally):
// define the root directories
define('ROOT_PROJECT', realpath(__DIR__ . '/../') . DIRECTORY_SEPARATOR);
define('ROOT_APPLICATION', realpath(__DIR__ . '/../app/') . DIRECTORY_SEPARATOR);
define('ROOT_DOCUMENT', __DIR__ . DIRECTORY_SEPARATOR);
// include the vendor autoloader
require ROOT_PROJECT . 'vendor/autoload.php';
// include the application autoloader
require ROOT_APPLICATION . 'autoload.php';
// include the services configuration (defines $di)
require ROOT_APPLICATION . 'services/services.php';
// if the application is in development
if ($di->get('environment')->isDevelopment()) {
(new \Phalcon\Debug())->listen();
}
// this causes a segmentation fault!
\App\Model\Group::findFirst(1);
// don't start the application; we're debugging stuff
// echo (new \Phalcon\Mvc\Application($di))->handle()->getContent();When I go to my development site, the application crashes, and Safari displays an error message saying, "Safari can't open the page, because the server unexpectedly dropped the connection."
However, I can tail Apache's error logs and see PHP encountered a segmentation fault:
$ tail /var/log/apache2/error.log
[Sun Apr 24 17:56:33.085807 2016] [core:notice] [pid 17024] AH00051: child pid 17065 exit signal Segmentation fault (11), possible coredump in /etc/apache2I tried to use gdb to troubleshoot the issue:
$ gdb php
(gdb) run "path/to/index.php"
Program received signal SIGSEGV, Segmentation fault.
0xb5e41e76 in zephir_call_user_function () from /usr/lib/php/20151012/phalcon.so
(gdb) bt
#0 0xb5e41e76 in zephir_call_user_function () from /usr/lib/php/20151012/phalcon.so
#1 0xb5e431cb in zephir_call_class_method_aparams () from /usr/lib/php/20151012/phalcon.so
#2 0xb5e44344 in zephir_create_instance_params () from /usr/lib/php/20151012/phalcon.so
#3 0xb5d01e20 in zim_Phalcon_Di_get () from /usr/lib/php/20151012/phalcon.so
#4 0x80287668 in execute_internal ()
#5 0x801edf3f in dtrace_execute_internal ()
#6 0xb5e42ef5 in zephir_call_user_function () from /usr/lib/php/20151012/phalcon.so
#7 0xb5e431cb in zephir_call_class_method_aparams () from /usr/lib/php/20151012/phalcon.so
#8 0xb5c5d0dd in zim_Phalcon_Mvc_Model_Manager_createBuilder () from /usr/lib/php/20151012/phalcon.so
#9 0x80287668 in execute_internal ()
#10 0x801edf3f in dtrace_execute_internal ()
#11 0xb5e42ef5 in zephir_call_user_function () from /usr/lib/php/20151012/phalcon.so
#12 0xb5e431cb in zephir_call_class_method_aparams () from /usr/lib/php/20151012/phalcon.so
#13 0xb5dd1cbf in zim_Phalcon_Mvc_Model_find () from /usr/lib/php/20151012/phalcon.so
#14 0x80287668 in execute_internal ()
#15 0x801edf3f in dtrace_execute_internal ()
#16 0x8027cd24 in ?? ()
#17 0x8023acfa in execute_ex ()
#18 0x801ede3d in dtrace_execute_ex ()
#19 0x80288fcb in zend_execute ()
#20 0x801fd6f0 in zend_execute_scripts ()
#21 0x8019cc76 in php_execute_script ()
#22 0x8028b060 in ?? ()
#23 0x80071187 in main ()
(gdb) f
#0 0xb5e41e76 in zephir_call_user_function () from /usr/lib/php/20151012/phalcon.so
(gdb) info f
Stack level 0, frame at 0xbfffb860:
eip = 0xb5e41e76 in zephir_call_user_function; saved eip = 0xb5e431cb
called by frame at 0xbfffb8d0
Arglist at 0xbfffb858, args:
Locals at 0xbfffb858, Previous frame's sp is 0xbfffb860
Saved registers:
ebx at 0xbfffb84c, ebp at 0xbfffb858, esi at 0xbfffb850, edi at 0xbfffb854, eip at 0xbfffb85c
(gdb) info args
No symbol "args" in current context.I did some sanity checking by making some changes to my index.php:
// continued from above...
// comment out the problem line
// \App\Model\Group::findFirst(1);
$group = new \App\Model\Group();
$meta = $di->get('modelsMetadata');
$strategy = $meta->getStrategy();
echo '<p>' . get_class($meta) . '</p>';
echo '<p>' . get_class($strategy) . '</p>';
echo '<p>' . var_dump($strategy->getMetaData($group, $di)) . '</p>';This produces the following output:
Phalcon\Mvc\Model\MetaData\Memory
Phalcon\Mvc\Model\MetaData\Strategy\Introspection
array(12) { [0]=> array(2) { [0]=> string(2) "id" [1]=> string(4) "name" } [1]=> array(1) { [0]=> string(2) "id" } [2]=> array(1) { [0]=> string(4) "name" } [3]=> array(2) { [0]=> string(2) "id" [1]=> string(4) "name" } [4]=> array(2) { ["id"]=> int(0) ["name"]=> int(2) } [5]=> array(1) { ["id"]=> bool(true) } [8]=> string(2) "id" [9]=> array(2) { ["id"]=> int(1) ["name"]=> int(2) } [10]=> array(0) { } [11]=> array(0) { } [12]=> array(0) { } [13]=> array(0) { } }However, adding a call to getAttributes() causes a segmentation fault:
// continued from above...
// comment out the problem line
// \App\Model\Group::findFirst(1);
$group = new \App\Model\Group();
$meta = $di->get('modelsMetadata');
$strategy = $meta->getStrategy();
echo '<p>' . get_class($meta) . '</p>';
echo '<p>' . get_class($strategy) . '</p>';
echo '<p>' . var_dump($strategy->getMetaData($group, $di)) . '</p>';
// add this line to produce a segmentation fault
echo '<p>' . var_dump($meta->getAttributes($group)) . '</p>'; Phew! Any ideas?
I'm sorry for the wall of text, but thank you for any help! PhalconPHP is super fast, but more importantly, it's just a great framework! Thank you for your hard work PhalconPHP Team!
EDIT: Whoops! I called it Model::find() instead of Model::findFirst() in my title and description here. Sorry for the confusion.
