Should anyWord16 / anyWord32 / anyWord fail when input is too short?

[cdsmith]

It looks like anyWord16, anyWord32, and anyWord will succeed when there are too few bytes in the buffer. I may be missing something here, but it looks like the buffer is read past the end in this case. Is this a bug?

Uncovered while writing test cases.

[AndrasKovacs]

It's absolutely a bug, thanks for noticing. Fixed it.

[cdsmith]

Thanks!