From: Sasha Pachev
Date: May 18 1999 3:00am
Subject: Re: mysql_real_connect problem
List-Archive: http://lists.mysql.com/mysql/3498
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Yury Bukhman wrote:
> 
> I am trying to create a simple MySQL client program in C. I'm getting a
> runtime "segmentation fault" error. I could not figure out why. Please,
> help!
> 
> ____
> Here is gdb diagnostic:
> (command: gdb programname core)
> Program terminated with signal 11, Segmentation fault.
> find_solib: Can't read pathname for load map: Input/output error
> 
> #0  0x8049f4d in mysql_real_connect ()
> 
> ____
> Here is the relevant part of my program:
> 
> #include <stdio.h>
> #include "mysql.h"
> 
> int main(){
>   MYSQL *mysql; /*server handle*/
>   char *host = "localhost";     /*hostname or an IP address*/
>   char *user = "guest";         /*user ID*/
>   char *passwd = NULL; /*password*/
>   char *db = "dom_base";            /*database name*/
>   unsigned int port = 0;                    /*TCP-IP port*/
>   char *unix_socket = "/tmp/mysql.sock";   /*UNIX socket for mysql
> connection*/
>   unsigned int client_flag = 0;
>   char *query;
>   MYSQL_RES *result;
>   MYSQL_ROW row;
> 
>   char *id, *method; /*pdb table field values*/
>   float resoln, r; /*pdb table field values*/
> 
>   if(mysql_init(mysql)==NULL){          /*initialize server handle*/
>     printf("mysql_init failed\n");
>     return 1;
>   }
>   if(mysql_real_connect(mysql, host, user, passwd, db, port,
>                         unix_socket, client_flag)==NULL){
> (at this statement, program crushes)
> 
> ___
> My compilation command:
> gcc -o first first.c -L/export/genie11/yury/mysql/lib -lmysqlclient
> -I/export/genie11/yury/mysql/include -W -Wall -g
> (exits normally with no warnings)
> 

Try changing passwd to "" ( emply stirng) instead of NULL ( null
pointer).

-- 
Sasha Pachev
http://www.sashanet.com