| Bug #1772 | memory leak in mysqlclient.lib (mysql_close) | ||
|---|---|---|---|
| Submitted: | 6 Nov 2003 16:01 | Modified: | 16 Dec 2003 17:40 |
| Reporter: | Pascal Drecker | Email Updates: | |
| Status: | No Feedback | Impact on me: | |
| Category: | MySQL Server | Severity: | S1 (Critical) |
| Version: | 4.0.16 | OS: | Windows (Windows XP) |
| Assigned to: | CPU Architecture: | Any | |
[7 Nov 2003 4:07]
Pascal Drecker
Another TWO memory leaks:
--------------------------------------
MYSQL *pMySQL;
pMySQL = mysql_init(NULL);
if (pMySQL == NULL)
return -1;
if (mysql_real_connect(pMySQL, "localhost", "root", "", "not_available", 0, NULL, 0) == NULL)
{
mysql_close(pMySQL);
return -1;
}
mysql_close(pMySQL);
--------------------------------------
#
# pointer address of pMySQL = 0x006C4680
#
#
# mysqlclient.lib (4.0.16)
#
Dumping objects ->
{198} normal block at 0x00369F98, 4088 bytes long.
Data: < X ø ÍÍÍÍ> 00 00 00 00 58 0D 00 00 F8 0F 00 00 CD CD CD CD
{191} normal block at 0x006C4590, 64 bytes long.
Data: <ÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ> CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD CD
{178} normal block at 0x006C4E20, 64 bytes long.
Data: < h (« > 00 00 00 00 00 00 00 00 68 07 00 00 28 AB 16 00
Object dump complete.
#
# Best Regards,
# Pascal Drecker
#
[9 Nov 2003 1:11]
Pascal Drecker
Sorry, the first reported memory leak was my mistake. I did not mentioned the function 'mysql_thread_end' because mysql_thread_init is called automatically.
Perhaps, as 'mysql_init' and 'mysql_connect' (default mysqlclient.lib) automatically call 'mysql_thread_init', these function description could be extended by a little note for the function 'mysql_thread_end'.
My mistake:
----------------------------
{178} normal block at 0x006C4E20, 64 bytes long.
Data: < h (« > 00 00 00 00 00 00 00 00 68 07 00 00 28 AB 16 00
----------------------------
After the function call 'mysql_real_connect' the other TWO memory leaks still exist!
Best Regards,
Pascal
[16 Nov 2003 17:40]
MySQL Verification Team
Could you please provide us with your complete *.dsw project stuff test. I will test it against Purify Windows. If yes please upload the zip file at ftp://support.mysql.com/pub/mysql/secret/ with a name identifying this bug report.
[14 Feb 2005 22:54]
Bugs System
No feedback was provided for this bug for over a month, so it is being suspended automatically. If you are able to provide the information that was originally requested, please do so and change the status of the bug back to "Open".
Description: Memory leak )-: in the following code: -------------------------------------- MYSQL *pMySQL; pMySQL = mysql_init(NULL); if (pMySQL == NULL) return -1; mysql_close(pMySQL); -------------------------------------- (compiled with MS Visual Studio 6 SP5) # # mysqlclient.lib (4.0.16) # Detected memory leaks! Dumping objects -> {178} normal block at 0x006C4E20, 64 bytes long. Data: < h (« > 00 00 00 00 00 00 00 00 68 07 00 00 28 AB 16 00 Object dump complete. # # mysqlclient.lib (4.0.13) # Detected memory leaks! Dumping objects -> {178} normal block at 0x006C4E20, 60 bytes long. Data: < h (« > 00 00 00 00 00 00 00 00 68 07 00 00 28 AB 16 00 Object dump complete. # # Best Regards from the University Greifswald (Germany) # Pascal Drecker # How to repeat: