There are several ways of obtaining Spliterators from random generators (Random::ints(…) etc) which do not have a user-supplied size, which means that they currently operate as though they have Long.MAX_VALUE elements, and report the characteristics SIZED and SUBSIZED.

However, the documentation for SIZED states:

```
Characteristic value signifying that the value returned from estimateSize() prior to traversal or splitting represents a finite size that, in the absence of structural source modification, represents an exact count of the number of elements that would be encountered by a complete traversal.
```

The aforementioned Spliterators reporting SIZED and SUBSIZED seems to violate that specification.