Edit report at http://bugs.php.net/bug.php?id=54583&edit=1
ID: 54583
Updated by: u...@php.net
Reported by: an0nym at narod dot ru
Summary: Segfault when trying to reexecute statement after
exception with libmysql
Status: Open
Type: Bug
Package: PDO related
Operating System: CentOS 5.5 x86_64
PHP Version: 5.3.6
-Assigned To:
+Assigned To: johannes
Block user comment: N
Private report: N
New Comment:
Affects libmysql only. No issue when using mysqlnd.
Johannes, please review and apply patch:
nixnutz@linux-fuxh:~/php/php-src/branches/PHP_5_3> svn diff
ext/pdo_mysql/
Index: ext/pdo_mysql/mysql_statement.c
===================================================================
--- ext/pdo_mysql/mysql_statement.c (Revision 310880)
+++ ext/pdo_mysql/mysql_statement.c (Arbeitskopie)
@@ -136,6 +136,7 @@
{
pdo_mysql_stmt *S = stmt->driver_data;
pdo_mysql_db_handle *H = S->H;
+ int paramno;
PDO_DBG_ENTER("pdo_mysql_stmt_execute_prepared_libmysql");
@@ -143,6 +144,10 @@
if (mysql_stmt_bind_param(S->stmt, S->params) ||
mysql_stmt_execute(S->stmt)) {
if (S->params) {
memset(S->params, 0, S->num_params *
sizeof(MYSQL_BIND));
+ for (paramno = 0; paramno < S->num_params;
paramno++) {
+ S->params[paramno].is_null =
&S->in_null[paramno];
+ S->params[paramno].length =
&S->in_length[paramno];
+ }
}
pdo_mysql_error_stmt(stmt);
if (mysql_stmt_errno(S->stmt) == 2057) {
Previous Comments:
------------------------------------------------------------------------
[2011-05-10 12:36:54] an0nym at narod dot ru
Sorry, CentOS is with mysqlnd now. Testing on Fedora:
root@test # uname -a
Linux test 2.6.35.11-83.fc14.x86_64 #1 SMP Mon Feb 7 07:06:44 UTC 2011
x86_64 x86_64 x86_64 GNU/Linux
06:32:59 ~
root@test # php -v
PHP 5.3.6 (cli) (built: Mar 17 2011 20:56:13)
Copyright (c) 1997-2011 The PHP Group
Zend Engine v2.3.0, Copyright (c) 1998-2011 Zend Technologies
06:33:02 ~
root@test # find / | grep libmysql
/usr/lib64/mysql/libmysqlclient.so.16.0.0
/usr/lib64/mysql/libmysqlclient_r.so.16.0.0
/usr/lib64/mysql/libmysqlclient_r.so.16
/usr/lib64/mysql/libmysqlclient.so.16
06:33:06 ~
root@test # cat test.php
<?php
var_dump(function_exists("mysqli_fetch_all"));
$DB = new PDO("mysql:dbname=test;host=localhost", "root", "",
array(PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
PDO::ATTR_EMULATE_PREPARES => false,
PDO::MYSQL_ATTR_INIT_COMMAND => "SET SQL_MODE =
'STRICT_ALL_TABLES'"));
$DB->exec("CREATE TEMPORARY TABLE t(f VARCHAR(1))");
$stmt = $DB->prepare("INSERT INTO t VALUES(:value)");
$value = "aa";
$stmt->bindParam(":value", $value);
try {
$stmt->execute();
} catch (PDOException $e) {}
$stmt->execute();
06:33:17 ~
root@test # php test.php
bool(false)
Segmentation fault
06:33:24 ~
root@test # mysql -uroot
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 5
Server version: 5.1.56 Source distribution
Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights
reserved.
This software comes with ABSOLUTELY NO WARRANTY. This is free software,
and you are welcome to modify and redistribute it under the GPL v2
license
Type 'help;' or '\h' for help. Type '\c' to clear the current input
statement.
mysql> exit
Bye
06:34:43 ~
root@test #
------------------------------------------------------------------------
[2011-05-10 10:15:36] u...@php.net
Which version of libmysql is used, what's the server version?
------------------------------------------------------------------------
[2011-04-22 17:23:13] an0nym at narod dot ru
Everything works fine with php5.3.5 + mysqlnd @ winsrv2008r2x64. So it
seems that
the error is with libmysql only.
------------------------------------------------------------------------
[2011-04-21 11:56:55] an0nym at narod dot ru
Try new test code, please. I will submit backtrace when I manage to
generate it.
------------------------------------------------------------------------
[2011-04-21 11:54:42] an0nym at narod dot ru
It seems you don't have strict mode enabled.
Try this.
<?php
$DB = new PDO("mysql:dbname=test;host=localhost", "root", "",
array(PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
PDO::ATTR_EMULATE_PREPARES => false,
PDO::MYSQL_ATTR_INIT_COMMAND => "SET SQL_MODE =
'STRICT_ALL_TABLES'"));
$DB->exec("CREATE TEMPORARY TABLE t(f VARCHAR(1))");
$stmt = $DB->prepare("INSERT INTO t VALUES(:value)");
$value = "aa";
$stmt->bindParam(":value", $value);
try {
$stmt->execute();
} catch (PDOException $e) {}
$stmt->execute();
------------------------------------------------------------------------
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