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Date: Thu, 12 Dec 2002 00:41:35 -0500
From: Robert James Kaes <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
Subject: Segfault When Calling mysql_real_connect() After mysql_options()
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Package: libmysqlclient10
Version: 3.23.49-8
Severity: serious
A segmentation fault occurs whenever I call mysql_options() before a call
to mysql_real_connect(). The segmentation fault is in the strcend()
function.
The following program demonstrates the problem:
#include <mysql.h>
#include <stdio.h>
int main(int argc, char** argv)
{
MYSQL mysql;
mysql_init(&mysql);
mysql_options(&mysql, MYSQL_READ_DEFAULT_GROUP, "some_program_name");
mysql_real_connect(&mysql, "localhost", NULL, NULL, "test", 0, NULL, 0);
return 0;
}
I compiled it using gcc version 2.95.4 20011002 (Debian prerelease) on a
Woody box using the following command line:
$ gcc -Wall -I/usr/include/mysql -g -o mysqltester mysql.c -lmysqlclient
If I run the program under gdb I get the following output:
$ gdb mysqltester
GNU gdb 2002-04-01-cvs
Copyright 2002 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you
are
welcome to change it and/or distribute copies of it under certain
conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for
details.
This GDB was configured as "i386-linux"...
(gdb) run
Starting program: /admin/mysqltester
Program received signal SIGSEGV, Segmentation fault.
0x4002ef60 in strcend () from /usr/lib/libmysqlclient.so.10
(gdb) bt
#0 0x4002ef60 in strcend () from /usr/lib/libmysqlclient.so.10
#1 0x40020922 in simple_command () from /usr/lib/libmysqlclient.so.10
#2 0x4002124d in mysql_real_connect () from /usr/lib/libmysqlclient.so.10
#3 0x080485b4 in main (argc=1, argv=0xbffffda4) at mysql.c:10
(gdb) quit
If I remove the call to mysql_options() the program runs fine. I'm at a
real loss to explain this problem.
-- Robert
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Robert James Kaes --- Flarenet Inc. --- (519) 426-3782
http://www.flarenet.com/
* Putting the Service Back in Internet Service Provider *
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Date: Mon, 6 Jun 2005 03:04:09 -0700
From: Steve Langasek <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
Subject: Re: Segfault When Calling mysql_real_connect() After mysql_options()
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This bug will not be fixed for the woody version of libmysqlclient, because
the last point release of woody has been issued and sarge is being released
this week. If this bug is still an issue for you, please upgrade to sarge.
Thanks,
--=20
Steve Langasek
postmodern programmer
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