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Bug #19269 PEAR.php - memory eating bug
Submitted: 2002-09-06 13:53 UTC Modified: 2002-09-25 12:41 UTC
From: wolfram at kriesing dot de Assigned:
Status: Closed Package: PEAR related
PHP Version: 4CVS-2002-09-06 OS: Any
Private report: No CVE-ID: None
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From: wolfram at kriesing dot de
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 [2002-09-06 13:53 UTC] wolfram at kriesing dot de 
i am working on a big import script and just for fun i checked the size of $GLOBALS on every turn, and i realized it grew constantly, i found out that
       pushErrorHandling
pushes 2 elements on the array _PEAR_error_handler_stack, but
       popErrorHandling
pop's only one off the array, so it grows on every use!

and since those are used in DB/mysql.php and File/CSV.php my memory limit comes closer with every run through the while-loop

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 [2002-09-18 10:19 UTC] mj@php.net 
Could you please try if the following patch (untested) works for you?

Index: PEAR.php
===================================================================
RCS file: /repository/php4/pear/PEAR.php,v
retrieving revision 1.47
diff -u -r1.47 PEAR.php
--- PEAR.php    21 Jul 2002 07:04:45 -0000      1.47
+++ PEAR.php    18 Sep 2002 15:15:50 -0000
@@ -582,7 +582,8 @@
     {
         $stack = &$GLOBALS['_PEAR_error_handler_stack'];
         array_pop($stack);
-        list($mode, $options) = $stack[sizeof($stack) - 1];
+        array_pop($stack);
+        list($mode, $options) = $stack[sizeof($stack)];
         if (isset($this)) {
             $this->setErrorHandling($mode, $options);
         } else {
 [2002-09-18 11:52 UTC] jrust at rustyparts dot com 
The problem with that solution is that if pushErrorHandling() has been called only once before popErrorHandling then after both array_pops are done there is nothing left in the stack to do list() on and thus the following error occurs:
NOTICE (0x08) in /usr/share/php-pear/PEAR.php on line 492
Undefined offset: 0

Maybe the list() part should be done before the 2nd array_pop?  Or is there a need for always putting both the default mode and the passed in mode onto the stack?
 [2002-09-24 17:44 UTC] jrust at rustyparts dot com 
This solution works.  It  just takes off the extra error mode after we're done using it.
--- PEAR2.php   Tue Sep 24 15:33:18 2002
+++ PEAR.php    Tue Sep 24 15:35:24 2002
@@ -583,6 +583,7 @@
         $stack = &$GLOBALS['_PEAR_error_handler_stack'];
         array_pop($stack);
         list($mode, $options) = $stack[sizeof($stack) - 1];
+        array_pop($stack);
         if (isset($this)) {
             $this->setErrorHandling($mode, $options);
         } else {
 [2002-09-25 12:41 UTC] mj@php.net 
This bug has been fixed in CVS.

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