/*
 *  call-seq:
 *     fi.to_s -> string
 *
 *  Return a string representation of the FieldInfo object.
 */
static VALUE
frt_fi_to_s(VALUE self)
{
    FieldInfo *fi = (FieldInfo *)DATA_PTR(self);
    char *fi_s = fi_to_s(fi);
    VALUE rfi_s = rb_str_new2(fi_s);
    free(fi_s);
    return rfi_s;
}