Function checkLoopLabels

pkg/sql/plpgsql/parser/lexer.go:669–677

(start, end string)

}

func checkLoopLabels(start, end string) error {
	if start == "" && end != "" {
		return errors.Newf("end label \"%s\" specified for unlabeled block", end)
	}
	if end != "" && start != end {
		return errors.Newf("end label \"%s\" differs from block's label \"%s\"", end, start)
	}
	return nil
}