Linux random numbers may not fill array completely

[05nelsonm]

Current Linux implementation for PlatformRandom only checks for an error, but does not check if the number returned (the number of bytes retrieved from /dev/urandom) filled the ByteArray completely.

See fillCompletely

And fillCompletelyUsage

for pointers

[whyoleg]

Thanks!

Will fix it
Do you have any idea on how to properly test it?

[05nelsonm]

Do you have any idea on how to properly test it?

I just tested the fillCompletely extension function HERE and of course the actual implementation to ensure the ByteArray was actually filled with non-empty values within a certain threshold (b/c some indices will still remain empty) HERE. AFAIK, there's no real good way to get the result to return a specific value that would make the reading of /dev/urandom testable.

[whyoleg]

fixed in 3e6e004

Real stress test was added in 6d596b5

Thx for findings!