ID: 40639
User updated by: spheroid@php.net
Reported By: spheroid@php.net
-Status: Feedback
+Status: Open
Bug Type: PDO related
Operating System: Mac OS X 10.4.8
PHP Version: 5CVS-2007-02-26 (CVS)
New Comment:
(gdb) p stmt
$1 = (pdo_stmt_t *) 0x172a624
(gdb) p *stmt
$2 = {
ce = 0x24a0180,
properties = 0x172a6e8,
in_get = 0,
in_set = 0,
methods = 0x557bc0,
driver_data = 0x172a768,
executed = 1,
supports_placeholders = 0,
_reserved = 0,
column_count = 1,
columns = 0x172a95c,
database_object_handle = {
value = {
lval = 1,
dval = 5.5997329951816251e-307,
str = {
val = 0x1 <Address 0x1 out of bounds>,
len = 5843616
},
ht = 0x1,
obj = {
handle = 1,
handlers = 0x592aa0
}
},
refcount = 2,
type = 5 '\005',
is_ref = 0 '\0'
},
dbh = 0x172a3a0,
bound_params = 0x172ad34,
bound_param_map = 0x0,
bound_columns = 0x0,
row_count = -1,
query_string = 0x172a740 "SELECT 'foo' WHERE '1'
= :value",
query_stringlen = 31,
active_query_string = 0x0,
active_query_stringlen = 28,
error_code = "00000",
lazy_object_ref = {
value = {
lval = 0,
dval = 0,
str = {
val = 0x0,
len = 0
},
ht = 0x0,
obj = {
handle = 0,
handlers = 0x0
}
},
refcount = 0,
type = 0 '\0',
is_ref = 0 '\0'
},
refcount = 1,
default_fetch_type = PDO_FETCH_BOTH,
fetch = {
column = 0,
cls = {
ce = 0x0,
ctor_args = 0x0,
retval_ptr = 0x0,
fci = {
size = 0,
function_table = 0x0,
function_name = 0x0,
symbol_table = 0x0,
retval_ptr_ptr = 0x0,
param_count = 0,
params = 0x0,
object_pp = 0x0,
no_separation = 0 '\0'
},
fcc = {
initialized = 0 '\0',
function_handler = 0x0,
calling_scope = 0x0,
object_pp = 0x0
}
},
func = {
function = 0x0,
fetch_args = 0x0,
object = 0x0,
fci = {
size = 0,
function_table = 0x0,
function_name = 0x0,
symbol_table = 0x0,
retval_ptr_ptr = 0x0,
param_count = 0,
params = 0x0,
object_pp = 0x0,
no_separation = 0 '\0'
},
fcc = {
initialized = 0 '\0',
function_handler = 0x0,
calling_scope = 0x0,
object_pp = 0x0
},
values = 0x0
},
into = 0x0
},
named_rewrite_template = 0x0
}
(gdb) p i
$3 = 0
(gdb) p stmt->columns[i]
$4 = {
name = 0x0,
namelen = 6648949,
maxlen = 25,
param_type = 17,
precision = 47,
dbdo_data = 0x172adf4
}
Previous Comments:
------------------------------------------------------------------------
[2007-02-26 13:00:19] tony2001@php.net
Type in gdb after the segfault:
p stmt
p *stmt
p i
p stmt->columns[i]
and post the results here.
------------------------------------------------------------------------
[2007-02-26 12:52:12] spheroid@php.net
Description:
------------
The DBLIB PDO driver seems to crash when first execution of
repeated prepared statement wont actually return any rows. If
the first execution does return rows, it works fine.
Reproduce code:
---------------
$pdo = new PDO('dblib:host=hostname;dbname=dbname', 'user', 'pass');
$query = "SELECT 'foo' WHERE '1' = :value";
$stmt = $pdo->prepare($query);
$values = array('0', '1');
foreach ($values as $value) {
$stmt->bindValue(':value', $value);
$stmt->execute();
while ($stmt->fetch() !== false);
$stmt->closeCursor();
}
Expected result:
----------------
Nothing.
Actual result:
--------------
(gdb) run dblib2.php
Starting program: /usr/local/bin/php dblib2.php
Reading symbols for shared libraries .+++..+++++..++++.. done
Program received signal EXC_BAD_ACCESS, Could not access
memory.
Reason: KERN_PROTECTION_FAILURE at address: 0x00000000
0x000faf43 in do_fetch (stmt=0x172a624, do_bind=0,
return_value=0x172a944, how=PDO_FETCH_USE_DEFAULT,
ori=PDO_FETCH_ORI_NEXT, offset=0, return_all=0x0) at /usr/
local/src/PHP_5_2/ext/pdo/pdo_stmt.c:1026
1026 add_assoc_zval
(return_value, stmt->columns[i].name, val);
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/?id=40639&edit=1