Derick H Siddoway wrote:
>
> You're calling mysql_free_result() on a pointer that has never
> been used or initialized. That is, why call mysql_free_result()
> when you've never called mysql_store_result()?
>
> --
> derick
This segfaults though before the program gets to any of
the mysql calls. sscanf will fail with a segfault as it
is trying to store a string at the address of something
that was supposed to be a character, and will most
likely address something outside of the allowed limits
>
> From: tom%bedell.net@Internet on 03/21/99 08:21 PM
> To: mysql%lists.mysql.com@Internet
> cc: (bcc: Derick H Siddoway/TC/TRS/American Express)
> Subject: Why the error here?
>
> Hello,
>
> I am trying to use:
>
> mysql_create_db in a C program. It compiles and links OK. But when you
> execute the program, I get the following error.
>
> #include "mysql.h"
> #include "mysql.h"
> #include <stdio.h>
> #include <stdlib.h>
>
> MYSQL mysql;
> MYSQL_RES *res;
> MYSQL_ROW row;
> char *db = "db";
>
> void exiterr(int exitcode)
> {
> fprintf( stderr, "%s\n", mysql_error(&mysql) ); exit( exitcode );
> }
>
> main()
> {
> char db;
> printf("Enter a name for your new database\n\n"); scanf("%s", &db);
> if (!(mysql_connect(&mysql,"localhost","root",""))) exiterr(1);
> if (mysql_create_db(&mysql, &db))
> exiterr(2);
>
> mysql_free_result(res);
> mysql_close(&mysql);
> }
>
> When I run my code here is what I get:
> [root@oscar mysql_c]# ./connect
> Enter a name for your new database
>
> homes
> Segmentation fault
> BUT.... The database is added to mysql. I can connect to it, and view the
> "empty set". Why the segmentation fault???
> Thank you in andvance.
>
> Tom Bedell
> Tom@stripped
>
--
Sasha Pachev
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http://www.direct1.com/ (work)
