Bug #65450 [Opn->Fbk]: PHP 5.3.27 segfaults during shutdown
Edit report at https://bugs.php.net/bug.php?id=65450&edit=1
ID: 65450
Updated by: cmb@php.net
Reported by: jakub dot lopuszanski at nasza-klasa dot pl
Summary: PHP 5.3.27 segfaults during shutdown
-Status: Open
+Status: Feedback
Type: Bug
Package: CGI/CLI related
Operating System: linux
PHP Version: Irrelevant
-Assigned To:
+Assigned To: cmb
Block user comment: N
Private report: N
New Comment:
Is that still an issue for you with any of the actively supported
PHP versions[1]?
[1] <https://www.php.net/supported-versions.php>
Previous Comments:
------------------------------------------------------------------------
[2013-08-14 15:52:27] jakub dot lopuszanski at nasza-klasa dot pl
Description:
------------
Follwing script outputs
"""
X
Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate
72 bytes) in /home/jlopuszanski/test.php on line 8
B
Segmentation fault
"""
on php 5.3.27.
The problem is quite difficult to reproduce, as it greately depends on the
filename, length of arguments etc.
Therefore I run it in a loop with different length of an argument passed to the
script.
Sometimes uncommenting the line with echo "Y\n"; (even though it is obviously
unreachable) helps to cause the error.
Sometimes I have to use ~/test.php or ./test.php instead of test.php as a
filename to trigger the Segfault.
Once I find a good combination of filename and arguments, the problem is
persistent and can be reproduced 100% of times for that combination.
Test script:
---------------
cat test.php
<?php
class A{
function __construct(){
register_shutdown_function(array(__CLASS__, 'handle_shutdown'));
echo "X\n";
while(1){
$t[]=new B();
}
// echo "Y\n";
}
static public function handle_shutdown(){
echo "B\n";
$b=new B();
$b=null;
}
}
class B{
}
$a=new A();
?>
for((n=0;n<100;++n));
do
echo $n;
php-5.3.27/bin/php ~/test.php for((i=0;i<n;++i));do echo -n a;done;
done
Expected result:
----------------
X
Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate
72 bytes) in /home/jlopuszanski/test.php on line 8
B
Actual result:
--------------
X
Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate
72 bytes) in /home/jlopuszanski/test.php on line 8
B
Segmentation fault
------------------------------------------------------------------------
--
Edit this bug report at https://bugs.php.net/bug.php?id=65450&edit=1
Thread (3 messages)