[Info-vax] 64-bit file sizes, was: Re: scp or sftp: file is "raw", needs to be parsed - possible to work around that?

[Arne Vajhøj]

On 5/20/2021 4:35 PM, Stephen Hoffman wrote:
> On 2021-05-20 20:10:12 +0000, Simon Clubley said:
> 
>> I was thinking more about the internal RMS indexed file structure and 
>> if the internal block pointers to other parts of the indexed file are 
>> 32-bit values.
>>
>> I was wondering if we would need a Prolog-4 version of RMS indexed 
>> files with 64-bit internal block numbers. There are also RFAs to 
>> consider and how you would move them around the rest of VMS and the 
>> user's applications.
> 
> SQLite is 64-bit.  🤷🏼  🦆🦆

It may compile with 64 bit pointers,

But https://www.sqlite.org/limits.html says:

<quote>
14. Maximum Database Size

Every database consists of one or more "pages". Within a single 
database, every page is the same size, but different database can have 
page sizes that are powers of two between 512 and 65536, inclusive. The 
maximum size of a database file is 4294967294 pages. At the maximum page 
size of 65536 bytes, this translates into a maximum database size of 
approximately 1.4e+14 bytes (281 terabytes, or 256 tebibytes, or 281474 
gigabytes or 256,000 gibibytes).
</quote>

4294967294 smells very 32bitish.

:-)

Arne