Bug #53847 [Opn->Fbk]: Crash after setting $field in mysql_result to NULL

Edit report at http://bugs.php.net/bug.php?id=53847&edit=1 ID: 53847 Updated by: kalle@php.net Reported by: ps at tns dot cz Summary: Crash after setting $field in mysql_result to NULL -Status: Open +Status: Feedback Type: Bug -Package: Reproducible crash +Package: MySQL related Operating System: FreeBSD 8.1-RELEASE-p1 amd64 PHP Version: 5.3.5 Block user comment: N Private report: N New Comment: Could you try without the Suhosin patch (as we don't supported patched versions), and does this happen when the mysql extension is linked specifically to libmysql or mysqlnd? Previous Comments: ------------------------------------------------------------------------ [2011-01-26 13:40:02] ps at tns dot cz Description: ------------ Assigning of value NULL to $field argument of mysql_result causes segmentation fault. PHP version: PHP 5.3.5 with Suhosin-Patch (cli) (built: Jan 10 2011 14:50:28) Installed modules: php5-ctype-5.3.5 php5-curl-5.3.5 php5-dom-5.3.5 php5-ftp-5.3.5 php5-gd-5.3.5 php5-hash-5.3.5 php5-iconv-5.3.5 php5-json-5.3.5 php5-mbstring-5.3.5 php5-mcrypt-5.3.5 php5-mysql-5.3.5 php5-mysqli-5.3.5 php5-openssl-5.3.5 php5-session-5.3.5 php5-simplexml-5.3.5 php5-soap-5.3.5 php5-tidy-5.3.5 php5-tokenizer-5.3.5 php5-xml-5.3.5 php5-zip-5.3.5 php5-zlib-5.3.5 Diff for php.ini: http://pastebin.com/5D1WsneT Test script: --------------- http://pastebin.com/2D4mVyEx Expected result: ---------------- Script should run and output nothing. Actual result: -------------- Segmentation fault. Problem is the wrong assigning of value NULL to $field argument of mysql_result on lines 13-14. Weird is that commenting out one line of for example lines 31, 32 or 33 avoids the crash. Cannot reproduce with Zend MM disabled. Cannot reproduce with PHP compiled with debug option (!). Backtrace (not useful since debug must be disabled) http://pastebin.com/KksuenGw Valgrind log (I guess not useful eighter since debug must be disabled) http://pastebin.com/vu9nsLLT ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/bug.php?id=53847&edit=1