From: jdornan at stanford dot edu
Operating system: All
PHP version: 5.2.10
PHP Bug Type: DBM/DBA related
Bug description: Error in dba_exists C code
Description:
------------
Using dba_exists with a file opened with dba_popen and the db4 handler
will result in an error.
Notice: dba_exists(): DB_THREAD mandates memory allocation flag on DBT
data
I found a similar problem was reported before for dba_fetch. Since
dba_fetch and dba_exists share common code it was clear to see how this
error could be fixed. Here is a simple diff between the original file and
the fixed version.
*** dba_db4.c 2009-07-31 13:24:14.000000000 -0400
--- dba_db4.c.fixed 2009-07-31 13:27:49.000000000 -0400
***************
*** 175,181 ****
--- 175,187 ----
DB4_GKEY;
memset(&gval, 0, sizeof(gval));
+ if (info->flags & DBA_PERSISTENT) {
+ gval.flags |= DB_DBT_MALLOC;
+ }
if (!dba->dbp->get(dba->dbp, NULL, &gkey, &gval, 0)) {
+ if (info->flags & DBA_PERSISTENT) {
+ free(gval.data);
+ }
return SUCCESS;
}
return FAILURE;
I checked an the error still exists in the 5.2 snapshot.
Reproduce code:
---------------
Test #1
<?PHP
$db = dba_popen('test.db4', 'c', 'db4');
dba_insert('b0rk', 'b0rk', $db);
if (dba_exists('b0rk', $db) == true) {
echo 'Yes, we have b0rk!' . PHP_EOL;
}
?>
Test #2
<?PHP
error_reporting(E_ALL);
$db = dba_popen('test.db4', 'c', 'db4');
dba_insert('b0rk', 'b0rk', $db);
if (dba_exists('b0rk', $db) == true) {
echo 'Yes, we have b0rk!' . PHP_EOL;
}
?>
Expected result:
----------------
Yes, we have b0rk!
Actual result:
--------------
Test #1
Nothing.
Test #2
Notice: dba_exists(): DB_THREAD mandates memory allocation flag on DBT
data in /tmp/test2.php on line 8
--
Edit bug report at http://bugs.php.net/?id=49125&edit=1
--
Try a snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=49125&r=trysnapshot52
Try a snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=49125&r=trysnapshot53
Try a snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=49125&r=trysnapshot60
Fixed in SVN:
http://bugs.php.net/fix.php?id=49125&r=fixed
Fixed in SVN and need be documented:
http://bugs.php.net/fix.php?id=49125&r=needdocs
Fixed in release:
http://bugs.php.net/fix.php?id=49125&r=alreadyfixed
Need backtrace:
http://bugs.php.net/fix.php?id=49125&r=needtrace
Need Reproduce Script:
http://bugs.php.net/fix.php?id=49125&r=needscript
Try newer version:
http://bugs.php.net/fix.php?id=49125&r=oldversion
Not developer issue:
http://bugs.php.net/fix.php?id=49125&r=support
Expected behavior:
http://bugs.php.net/fix.php?id=49125&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=49125&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=49125&r=submittedtwice
register_globals:
http://bugs.php.net/fix.php?id=49125&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=49125&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=49125&r=dst
IIS Stability:
http://bugs.php.net/fix.php?id=49125&r=isapi
Install GNU Sed:
http://bugs.php.net/fix.php?id=49125&r=gnused
Floating point limitations:
http://bugs.php.net/fix.php?id=49125&r=float
No Zend Extensions:
http://bugs.php.net/fix.php?id=49125&r=nozend
MySQL Configuration Error:
http://bugs.php.net/fix.php?id=49125&r=mysqlcfg
