Parsing of erroneous patterns succeeds

        boolean t1 = switch (obj) {
            case Long a[] -> true;
            default -> false;
        };
        boolean t2 = switch (obj) {
            case Double a[][][][] -> true;
                default -> false;
        };
        if (obj instanceof Float a[][]) {
        }
        if (obj instanceof Integer a = Integer.valueOf(0)) {
        }