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Bug #25329 sqlite_create_function with method and reference to $this
Submitted: 2003-08-31 00:00 UTC Modified: 2003-12-27 17:17 UTC
Avg. Score:3.0 ± 0.0
Reproduced:1 of 2 (50.0%)
Same Version:0 (0.0%)
Same OS:0 (0.0%)
From: firepages at firepages dot com dot au Assigned: helly (profile)
Status: Closed Package: SQLite related
PHP Version: 5.0.0b3-dev, 4.3.4 OS: *
Private report: No CVE-ID: None
 [2003-08-31 00:00 UTC] firepages at firepages dot com dot au
when trying to use sqlite_create_function() & passing a class method of $this apache dies orribly (appreciate it may be an apache issue)

Win XP Pro / php 4.3.3 compiled (MSVC) against apache 2.0.47

sqlite_create_function($this->db, 'link_keywords', array( $this,'linkers' ) , 1);
sqlite_create_function($this->db, 'link_keywords', array( &$this,'linkers' ) , 1);

note that calling an external class method or normal function [array($ext_class,$method)]gives no problem , just methods of $this

not tested on apache 1.* 

Reproduce code:
class sqlite_help{
	function sqlite_help(){
		$this->db = sqlite_open('e:/phpdev/cp/my_admin.sqldb.eng', 0666, $sqliteerror);
		sqlite_create_function($this->db, 'link_keywords', array( $this , 'linkers') , 1);
		return $this->db;
	function get_single( $key ){
		$res = sqlite_query( $this->db,"SELECT link_keywords(var) FROM my_admin WHERE key = '$key'" );
		$r = sqlite_fetch_array( $res , SQLITE_NUM );
		return $r[0];
	function linkers( $str ){
		$keywords = array('phpmyadmin'=>'<a href="http://localhost/phpmyadmin/index.php"">phpMyAdmin</a>');
		foreach($keywords as $k=>$v){$str = str_replace( $k , $v , $str );}
		return nl2br( $str );
$yaks=new sqlite_help();
echo $yaks->get_single('general');

Expected result:
str_replaced data from DB

works if function is external or external class method

Actual result:
an MS 'Apache has encountered an ....' etc Dialog no apache error log available , no PHP error logged.


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 [2003-08-31 03:30 UTC]

/usr/src/web/php/php4_3/Zend/zend_hash.c(544) : ht=0x08212634 is being destroyed
/usr/src/web/php/php4_3/Zend/zend_hash.c(108) : Bailed out without a bailout address!


Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 1024 (runnable)]
_efree (ptr=0x0) at /usr/src/web/php/php5/Zend/zend_alloc.c:257
257             CALCULATE_REAL_SIZE_AND_CACHE_INDEX(p->size);
(gdb) bt
#0  _efree (ptr=0x0) at /usr/src/web/php/php5/Zend/zend_alloc.c:257
#1  0x816cdfb in _zval_ptr_dtor (zval_ptr=0x4029bac4) at /usr/src/web/php/php5/Zend/zend_execute.h:67
#2  0x80b80c2 in php_sqlite_callback_invalidator (funcs=0x4029babc) at /usr/src/web/php/php5/ext/sqlite/sqlite.c:288
#3  0x80b8110 in php_sqlite_callback_dtor (pDest=0x4029babc) at /usr/src/web/php/php5/ext/sqlite/sqlite.c:310
#4  0x817a738 in zend_hash_destroy (ht=0x4029b8ec) at /usr/src/web/php/php5/Zend/zend_hash.c:513
#5  0x80b813c in php_sqlite_db_dtor (rsrc=0x4029b95c) at /usr/src/web/php/php5/ext/sqlite/sqlite.c:321
#6  0x817bb4d in list_entry_destructor (ptr=0x4029b95c) at /usr/src/web/php/php5/Zend/zend_list.c:178
#7  0x817a89e in zend_hash_apply_deleter (ht=0x8349f10, p=0x4029b924) at /usr/src/web/php/php5/Zend/zend_hash.c:568
#8  0x817a9da in zend_hash_graceful_reverse_destroy (ht=0x8349f10) at /usr/src/web/php/php5/Zend/zend_hash.c:634
#9  0x817bc56 in zend_destroy_rsrc_list (ht=0x8349f10) at /usr/src/web/php/php5/Zend/zend_list.c:234
#10 0x816cc93 in shutdown_executor () at /usr/src/web/php/php5/Zend/zend_execute_API.c:279
#11 0x817555f in zend_deactivate () at /usr/src/web/php/php5/Zend/zend.c:795
#12 0x8149224 in php_request_shutdown (dummy=0x0) at /usr/src/web/php/php5/main/main.c:1197
#13 0x81ab61e in main (argc=2, argv=0xbffff694) at /usr/src/web/php/php5/sapi/cli/php_cli.c:1013
#14 0x401b19cb in __libc_start_main (main=0x81aa848 <main>, argc=2, argv=0xbffff694, init=0x8070368 <_init>, 
    fini=0x81abbe4 <_fini>, rtld_fini=0x4000aea0 <_dl_fini>, stack_end=0xbffff68c)
    at ../sysdeps/generic/libc-start.c:92

 [2003-12-27 16:56 UTC]
The problem is the reference to $this from the generated sqlite (php)function. See ext/sqlite/tests/sqlite_oo_029.phpt on how to work around.
 [2003-12-27 17:17 UTC]
This bug has been fixed in CVS.

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