From:
Operating system: Debian Squeeze
PHP version: 5.3.8
Package: PCNTL related
Bug Type: Bug
Bug description:pcntl_signal doesn't decrease ref-count of old handler when
setting SIG_DFL
Description:
------------
When overwriting an old signal handler (that references "$this" for
example) with SIG_DFL, the reference counter on $this is not decreased, so
when unsetting the object, it cannot be freed.
My current workaround: When overwriting the signal handler with an empty
function before ("function() {}"), the ref-count is correctly decreased
(WTF?!), and the instance is immediately freed, when unsetting the object.
Test script:
---------------
class Test {
public function __construct() {
pcntl_signal(SIGUSR1, array($this, 'signalHandler'), false);
//pcntl_signal(SIGUSR1, function() {}); // destruct works correctly
when commenting in
pcntl_signal(SIGUSR1, SIG_DFL);
}
public function signalHandler() {
}
public function __destruct() {
echo '__destruct' . PHP_EOL;
}
}
$test = new Test();
echo 'unsetting' . PHP_EOL;
unset($test);
echo 'end' . PHP_EOL;
Expected result:
----------------
unsetting
__destruct
end
Actual result:
--------------
unsetting
end
__destruct
--
Edit bug report at https://bugs.php.net/bug.php?id=60509&edit=1
--
Try a snapshot (PHP 5.4):
https://bugs.php.net/fix.php?id=60509&r=trysnapshot54
Try a snapshot (PHP 5.3):
https://bugs.php.net/fix.php?id=60509&r=trysnapshot53
Try a snapshot (trunk):
https://bugs.php.net/fix.php?id=60509&r=trysnapshottrunk
Fixed in SVN:
https://bugs.php.net/fix.php?id=60509&r=fixed
Fixed in SVN and need be documented:
https://bugs.php.net/fix.php?id=60509&r=needdocs
Fixed in release:
https://bugs.php.net/fix.php?id=60509&r=alreadyfixed
Need backtrace:
https://bugs.php.net/fix.php?id=60509&r=needtrace
Need Reproduce Script:
https://bugs.php.net/fix.php?id=60509&r=needscript
Try newer version:
https://bugs.php.net/fix.php?id=60509&r=oldversion
Not developer issue:
https://bugs.php.net/fix.php?id=60509&r=support
Expected behavior:
https://bugs.php.net/fix.php?id=60509&r=notwrong
Not enough info:
https://bugs.php.net/fix.php?id=60509&r=notenoughinfo
Submitted twice:
https://bugs.php.net/fix.php?id=60509&r=submittedtwice
register_globals:
https://bugs.php.net/fix.php?id=60509&r=globals
PHP 4 support discontinued:
https://bugs.php.net/fix.php?id=60509&r=php4
Daylight Savings: https://bugs.php.net/fix.php?id=60509&r=dst
IIS Stability:
https://bugs.php.net/fix.php?id=60509&r=isapi
Install GNU Sed:
https://bugs.php.net/fix.php?id=60509&r=gnused
Floating point limitations:
https://bugs.php.net/fix.php?id=60509&r=float
No Zend Extensions:
https://bugs.php.net/fix.php?id=60509&r=nozend
MySQL Configuration Error:
https://bugs.php.net/fix.php?id=60509&r=mysqlcfg
