sum of numbers using Primitives range

[Arul Dhesiaseelan]

Sum of integers over using a Primitives range returns invalid result.

    range(1, 10).map(operand -> operand).sum();
    range(1, 10).reduce(0, Integer::sum);
    range(1, 10).sum();


They all yield 45, instead of 55. Is this a bug?

-Arul