ID: 35620
User updated by: humbads at alum dot mit dot edu
Reported By: humbads at alum dot mit dot edu
-Status: Feedback
+Status: Open
Bug Type: PDO related
Operating System: Windows XP SP2
-PHP Version: 5CVS-2005-12-10 (snap)
+PHP Version: 5CVS-2005-12-14 (snap)
Assigned To: wez
New Comment:
This one also gives an exception, slightly different from before. This
crash is different than bug #35552, which occurs on any query for which
ODBC should return an error. This crash seems to happens when the
destructor is called on the statement. I noticed if there is no die()
or exit() in the function call (or class), there is no crash. My
second code example doesn't have this call and doesn't crash, so maybe
that's why you couldn't reproduce it. Snapshot
php5.1-win32-200512140730.zip.
Here a fixed example:
Reproduce code:
---------------
q();
function q() {
$odbc = new PDO("odbc:DSN=LocalPT;UID=ptuser;PWD=ptuser");
$query = "SELECT * FROM tblUser";
$result = $odbc->query($query);
die();
}
Stack trace:
---------------
Unhandled exception at 0x7c901010 (ntdll.dll) in php-cgi.exe:
0xC0000005: Access violation reading location 0x00000018.
> [EMAIL PROTECTED]() + 0xb
odbc32.dll!CCriticalSection::Enter() + 0xf
[EMAIL PROTECTED]() + 0xf
[EMAIL PROTECTED]() + 0x23
[EMAIL PROTECTED]() + 0x2b
php_pdo_odbc.dll!odbc_stmt_dtor(_pdo_stmt_t * stmt=0x007218a0, void *
* * tsrm_ls=0x00324090) Line 56 C
php_pdo.dll!free_statement(_pdo_stmt_t * stmt=0x007218a0, void * * *
tsrm_ls=0x00324090) Line 2118 + 0x8 C
php_pdo.dll!php_pdo_stmt_delref(_pdo_stmt_t * stmt=0x007218a0, void *
* * tsrm_ls=0x00324090) Line 2157 + 0xb C
php_pdo.dll!pdo_dbstmt_free_storage(_pdo_stmt_t * stmt=0x007218a0,
void * * * tsrm_ls=0x00324090) Line 2162 + 0xf C
php5ts.dll!100ab5f7()
php5ts.dll!10096192()
[EMAIL PROTECTED]() + 0x26
[EMAIL PROTECTED]() + 0x114
Previous Comments:
------------------------------------------------------------------------
[2005-12-14 06:00:14] [EMAIL PROTECTED]
I meant that this could be the same as #35592, not #35552.
------------------------------------------------------------------------
[2005-12-14 05:58:57] [EMAIL PROTECTED]
This could be the same bug as #35552.
I couldn't reproduce the issue, but did spot some code that might cause
something like this to happen.
Please try the next snapshot dated after this message to see if that
nailed it.
------------------------------------------------------------------------
[2005-12-10 08:43:54] humbads at alum dot mit dot edu
The same crash occurs if the code is simply within a function, rather
than a class. Furthermore, the same crash occurs if another data source
is used, e.g. SQL Server.
myfunction();
function myfunction() {
$odbc = new PDO("odbc:Driver={Microsoft Visual FoxPro
Driver};SourceType=DBF;SourceDB=C:\\");
$query = "SELECT * FROM invoice";
$result = $odbc->query($query);
}
------------------------------------------------------------------------
[2005-12-10 08:24:07] humbads at alum dot mit dot edu
Description:
------------
php-cgi.exe crashes with an access violation when using PDO ODBC to run
a simple query as given below. The code runs without error if not
enclosed in a class. It also runs without error if the query is run
without saving the return value in $result. The stack trace indicates a
crash when destroying the implicit prepared statement.
Reproduce code:
---------------
$mc = new MyClass;
class MyClass {
function MyClass() {
$odbc = new PDO("odbc:Driver={Microsoft Visual FoxPro
Driver};SourceType=DBF;SourceDB=C:\\");
$query = "SELECT * FROM invoice";
$result = $odbc->query($query);
die("happy");
}
}
Expected result:
----------------
It should not crash when returning the result, or when running from
within a class.
Actual result:
--------------
> [EMAIL PROTECTED]() + 0xb
odbc32.dll!CCriticalSection::Enter() + 0xf
[EMAIL PROTECTED]() + 0xf
[EMAIL PROTECTED]() + 0x23
[EMAIL PROTECTED]() + 0x2b
php_pdo_odbc.dll!odbc_stmt_dtor(_pdo_stmt_t * stmt=0x00720448, void *
* * tsrm_ls=0x00323eb0) Line 56 C
php_pdo.dll!free_statement(_pdo_stmt_t * stmt=0x00720448, void * * *
tsrm_ls=0x00323eb0) Line 2118 + 0x8 C
php_pdo.dll!php_pdo_stmt_delref(_pdo_stmt_t * stmt=0x00720448, void *
* * tsrm_ls=0x00323eb0) Line 2157 + 0xb C
php_pdo.dll!pdo_dbstmt_free_storage(_pdo_stmt_t * stmt=0x00720448,
void * * * tsrm_ls=0x00323eb0) Line 2162 + 0xf C
php5ts.dll!zend_objects_store_free_object_storage(_zend_objects_store
* objects=0x00328dc4, void * * * tsrm_ls=0x00323eb0) Line 83 + 0xb C
php5ts.dll!shutdown_executor(void * * * tsrm_ls=0x00a232c0) Line 273
+ 0x13 C
[EMAIL PROTECTED]() + 0x26
Unhandled exception at 0x7c901010 (ntdll.dll) in php-cgi.exe:
0xC0000005: Access violation reading location 0x00000018.
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/?id=35620&edit=1
