Mine

char *vhostID;
char *vhostDIR;
char *fValue;
vhostDIR = g_hash_table_lookup(vhost_table, con->uri.authority->ptr);
if (vhostDIR == NULL)
        {
               fValue = PQgetvalue(result, 0, 0);
               g_hash_table_insert(vhost_table, con->uri.authority->ptr , fValue);
}
else
        {
                log_error_write(srv, __FILE__, __LINE__,  "ss", " The buffered docroot isssss :",  vhostDIR);
                buffer_copy_string(docroot, vhostDIR);
        }