#48754 [Com]: mysql_close() crash php

 ID:               48754
 Comment by:       sjoerd-php at linuxonly dot nl
 Reported By:      busia at tiscali dot it
 Status:           Open
 Bug Type:         Reproducible crash
 Operating System: Windows Vista
 PHP Version:      5.3.0
 New Comment:

Thank you for your bug report.

I have a couple of questions regarding your bug report:
1. Is the sleep(2) needed to reproduce the bug?
2. Does the database connection succeed? (i.e. what is the return value
of mysql_connect?)


Previous Comments:
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[2009-07-01 12:30:54] busia at tiscali dot it

Description:
------------
This simple code crash php.

This is the Debug diagnostic tool output:

In
php__PID__5128__Date__07_01_2009__Time_02_22_25PM__909__Second_Chance_Exception_C0000005.dmp
the assembly instruction at php_mysql!zif_mysql_close+92 in C:\Program
Files\PHP\ext\php_mysql.dll from The PHP Group has caused an access
violation exception (0xC0000005) when trying to read from memory
location 0x00000000 on thread 0


Report for
php__PID__5128__Date__07_01_2009__Time_02_22_25PM__909__Second_Chance_Exception_C0000005.dmp
Type of Analysis Performed   Crash Analysis 
Machine Name   PC-UTENTE 
Operating System   Windows Vista Service Pack 1 
Number Of Processors   2 
Process ID   5128 
Process Image   C:\Program Files\PHP\php.exe 
System Up-Time   00:13:11 
Process Up-Time   00:00:02 


Thread 0 - System ID 5132
Entry point   php!mainCRTStartup 
Create time   01/07/2009 14.22.23 
Time spent in user mode   0 Days 0:0:0.31 
Time spent in kernel mode   0 Days 0:0:0.62 






Function     Arg 1     Arg 2     Arg 3   Source 
php_mysql!zif_mysql_close+92     00000000     02a0d350     00000000   

php5ts!zend_do_fcall_common_helper_SPEC+946     00000000     02a40070  
  00052fd0    
php5ts!ZEND_DO_FCALL_SPEC_CONST_HANDLER+130     00c0fbd4     00052fd0  
  00c0fe70    
php5ts!execute+29e     02a40070     00052f00     00000000    
php5ts!zend_execute_scripts+f6     00000008     00052fd0     00000000  
 
php5ts!php_execute_script+22d     00c0fe70     00052fd0     00000000   

php!main+bf1     00000002     00052f68     00051888    
php!mainCRTStartup+e3     7ffdb000     00c0ffd4     77bee4b6    
kernel32!BaseThreadInitThunk+e     7ffdb000     770bbeaf     00000000  
 
ntdll!__RtlUserThreadStart+23     00402d78     7ffdb000     00000000   

ntdll!_RtlUserThreadStart+1b     00402d78     7ffdb000     00000000   





PHP_MYSQL!ZIF_MYSQL_CLOSE+92In
php__PID__5128__Date__07_01_2009__Time_02_22_25PM__909__Second_Chance_Exception_C0000005.dmp
the assembly instruction at php_mysql!zif_mysql_close+92 in C:\Program
Files\PHP\ext\php_mysql.dll from The PHP Group has caused an access
violation exception (0xC0000005) when trying to read from memory
location 0x00000000 on thread 0

Module Information 
Image Name: C:\Program Files\PHP\ext\php_mysql.dll   Symbol Type:  PDB

Base address: 0x01c30000   Time Stamp:  Mon Jun 29 22:24:49 2009  
Checksum: 0x00000000   Comments:  Thanks to Zeev Suraski, Zak Greant,
Georg Richter 
COM DLL: False   Company Name:  The PHP Group 
ISAPIExtension: False   File Description:  MySQL 
ISAPIFilter: False   File Version:  5.3.0 
Managed DLL: False   Internal Name:  MYSQL extension 
VB DLL: False   Legal Copyright:  Copyright © 1997-2009 The PHP Group 
Loaded Image Name:  php_mysql.dll   Legal Trademarks:  PHP 
Mapped Image Name:  C:\Program Files\PHP\ext\php_mysql.dll   Original
filename:  php_mysql.dll 
Module name:  php_mysql   Private Build:   
Single Threaded:  False   Product Name:  PHP 
Module Size:  44,00 KBytes   Product Version:  5.3.0 
Symbol File Name: 
C:\Users\utente\Desktop\php-debug-pack-5.3.0-Win32-VC6-x86\php_mysql.pdb
  Special Build:  & 




Reproduce code:
---------------
<?php
sleep(2);
mysql_connect('127.0.0.1', 'root', 'root');
mysql_close();
?>



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


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Edit this bug report at http://bugs.php.net/?id=48754&edit=1