From: deanb at gbtn dot net
Operating system: Digital Unix 4.0F
PHP version: 4.3.5
PHP Bug Type: Sybase-ct (ctlib) related
Bug description: sybase_free_result crashes
Description:
------------
If I use sybase_free_result() in a script, then php crashes. The exact
same code works fine in php 4.3.4.
./configure --with-sybase-ct=${SYBASE}
--enable-track-vars
--without-mysql
--with-apache=../apache_1.3.29
--disable-dba
--enable-session
Reproduce code:
---------------
<?php
$db = sybase_connect("server", "user", "pass");
$res = sybase_query("select name from sysdatabases", $db);
while ($data = sybase_fetch_array($res)) {
print "db: $data[0]\n";
}
sybase_free_result($res);
sybase_close($db);
?>
Expected result:
----------------
a list of databases with no crashes
Actual result:
--------------
> php s.php
db: master
db: model
db: sybsystemprocs
db: tempdb
Segmentation fault (core dumped)
> dbx php core
dbx version 3.11.10
Type 'help' for help.
Core file created by program "php"
signal Segmentation fault at [_efree:241 ,0x12013e7c8]
CALCULATE_REAL_SIZE_AND_CACHE_INDEX(p->size);
(dbx) where
> 0 _efree(ptr = 0x52667250203a6264)
["/app/apps/web/php-4.3.5/Zend/zend_alloc.c":241, 0x12013e7c8]
1 php_sybase_finish_results(result = 0x1400cd5b8)
["/app/apps/web/php-4.3.5/ext/sybase_ct/php_sybase_ct.c":1011,
0x1200e766c]
2 zif_sybase_free_result(ht = 1, return_value = 0x1400d8298, this_ptr =
(nil), return_value_used = 0)
["/app/apps/web/php-4.3.5/ext/sybase_ct/php_sybase_ct.c":1602,
0x1200e8f20]
3 execute(op_array = 0x1400c52d8)
["/app/apps/web/php-4.3.5/Zend/zend_execute.c":1621, 0x12016fdf4]
4 zend_execute_scripts(type = 8, retval = (nil), file_count = 3)
["/app/apps/web/php-4.3.5/Zend/zend.c":889, 0x120155be0]
5 php_execute_script(primary_file = 0x11fffec10)
["/app/apps/web/php-4.3.5/main/main.c":1731, 0x120116d84]
6 main(argc = 2, argv = 0x11fffef28)
["/app/apps/web/php-4.3.5/sapi/cli/php_cli.c":822, 0x1201722e4]
(dbx) up
php_sybase_finish_results:1011 efree(result->tmp_buffer[i]);
(dbx) up
zif_sybase_free_result:1602 php_sybase_finish_results(result);
--
Edit bug report at http://bugs.php.net/?id=27828&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=27828&r=trysnapshot4
Try a CVS snapshot (php5): http://bugs.php.net/fix.php?id=27828&r=trysnapshot5
Fixed in CVS: http://bugs.php.net/fix.php?id=27828&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=27828&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=27828&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=27828&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=27828&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=27828&r=support
Expected behavior: http://bugs.php.net/fix.php?id=27828&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=27828&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=27828&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=27828&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=27828&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=27828&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=27828&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=27828&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=27828&r=float
