OT (Slightly?) 64-bit data - not a bug but a question

[Rob Rye]

My wife is helping to put together a new generation data archiving standard for 
a NASA organization, the Planetary Data System (PDS). In the past, this 
organization has always insisted upon raw data for their archives. The managers 
of the PDS may permit a single data compression tool. The front runner is gzip, 
given its ubiquity, unencumbered status, and likely long life. Some of her 
colleagues have asked whether gzip has any difficulties dealing with 64-bit 
data and/or with 64-bit architectures. I have told her that I am unaware of any 
such difficulties, but that I would inquire further. 

Are there any documented gzip bugs specifically related to such data or 
architecture?

Any documentation or links that you can provide me regarding this issue would 
be very helpful. I tried googling the issue but do not seem clever enough to 
define the search sufficiently narrowly.

Thanks,

Rob Rye