#40259 [Asn->Opn]: ob_start call many times - memory error
ID: 40259
Updated by: mike@php.net
Reported By: tomwys at o2 dot pl
-Status: Assigned
+Status: Open
Bug Type: Output Control
Operating System: Linux
PHP Version: 5.2.0
Assigned To: mike
New Comment:
It works even fine here with a count of 50000 if USE_ZEND_ALLOC=0 is
set. Maybe a MM failure?
Previous Comments:
------------------------------------------------------------------------
[2007-01-27 22:35:17] tony2001@php.net
Mike, this looks like a stack overflow to me (note that ob_flush() is
used, not ob_end_flush() so we got insane amount of nested buffers).
Do you think you can do something about it?
------------------------------------------------------------------------
[2007-01-27 22:13:21] tomwys at o2 dot pl
Description:
------------
I have tested this code on two machines. I have memory error or
endless loop.
On first machine code fails from $count = 385 on second machine from
$count = 1633.
Reproduce code:
---------------
<?php
$count = 385;
for($i = 1; $i < $count; $i ++) {
ob_start();
echo $i;
ob_flush();
}
?>
Expected result:
----------------
123456789101112[etc.]
Actual result:
--------------
First machine:
1[there is endless loop and 100% CPU]
Second machine:
1*** glibc detected *** double free or corruption (top):
0x0000000004c9c370 ***
Aborted
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/?id=40259&edit=1
Thread (8 messages)