#31070 [Opn->Fbk]: Possible integer overflow

From: Date: Fri, 14 Jan 2005 04:16:17 +0000
Subject: #31070 [Opn->Fbk]: Possible integer overflow
References: 1  Groups: php.bugs 
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 ID:               31070
 Updated by:       sniper@php.net
 Reported By:      dennis at inmarket dot lviv dot ua
-Status:           Open
+Status:           Feedback
 Bug Type:         Zend Engine 2 problem
 Operating System: Linux
 PHP Version:      5.0.2
 New Comment:

Please try using this CVS snapshot:

  http://snaps.php.net/php5-latest.tar.gz
 
For Windows:
 
  http://snaps.php.net/win32/php5-win32-latest.zip




Previous Comments:
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[2004-12-13 15:23:55] dennis at inmarket dot lviv dot ua

Description:
------------
I believe this is related to bug 28945, but it is in No Feedback mode,
and I could not contact him to reopen it.

It OCASSIONALLY happens in my app (it is a large set of classes), and
writes to the error log even more amazing thing: here is the sample
error log entry:

[12-Nov-2004 15:50:52] PHP Fatal error:  Possible integer overflow in
memory allocation (24 * 4294967295 + 0) in /**
   * Returns a SQLDataBase implementation for database $name
   *
   * @param   string $name  database name
   * @return  SQLDataBase   a SQLDataBase implementation for database
$name
   */ on line 11

The file that this scratch is ripped from is class definition, where no
memory allocation takes place (this is an abstract class)

Reproduce code:
---------------
It is not possible to reproduce this bug, it is a big set of classes
(about 170Kb source code), but it is caused by the engine I believe
(judging from how the error is reported)

Expected result:
----------------
At least the error log should be:

[12-Nov-2004 15:50:52] PHP Fatal error: Possible integer overflow in
memory allocation (24 * 4294967295 + 0) in <filename> on <line number>


Actual result:
--------------
12-Nov-2004 15:50:52] PHP Fatal error:  Possible integer overflow in
memory allocation (24 * 4294967295 + 0) in /**
   * Returns a SQLDataBase implementation for database $name
   *
   * @param   string $name  database name
   * @return  SQLDataBase   a SQLDataBase implementation for database
$name
   */ on line 11



------------------------------------------------------------------------


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