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
