Example C program which exposes bug, for me

mysqlplay.c (text/plain), 1.21 KB, created by Greg McIntyre on 2006-10-25 20:06:47 UTC

#include <stdio.h>
#include "mysql.h"

int main(void) {
    MYSQL conn;
    const char *host = NULL;
    const char *passwd = NULL;
    const char *db = "mysql";
    const char *user = "root";
    const char *unix_socket = NULL; //"/var/run/mysqld/mysqld.sock";
    uint port = MYSQL_PORT;
    uint client_flag = 0;
    const char *query = "SELECT User FROM user;";
    int err;
    MYSQL_ROW row;
    MYSQL_RES *result;

    mysql_init(&conn);
    printf("%s\n", mysql_error(&conn));
    mysql_real_connect(&conn, host, user, passwd, db, port, unix_socket,
            client_flag);
    printf("%s\n", mysql_error(&conn));

    err = mysql_query(&conn, query);
    if (err) {
        printf("%s\n", mysql_error(&conn));
    }
    result = mysql_store_result(&conn);
    if (result) {
        while (row = mysql_fetch_row(result)) {
             unsigned long *lengths = mysql_fetch_lengths(result);
             unsigned int num_fields = mysql_num_fields(result);
             int i;
             for (i = 0; i < num_fields; i++) {
                 printf("[%.*s] ", lengths[i], row[i] ? row[i] : "NULL");
             }
             printf("\n");
        }
        mysql_free_result(result);
    }
    mysql_close(&conn);
    return 0;
}