[Info-vax] VMS process communication

Craig A. Berry craigberry at nospam.mac.com
Fri Mar 10 18:09:44 EST 2023


On 10/31/2022 9:06 PM, Arne Vajhøj wrote:
> On 10/31/2022 9:18 AM, Simon Clubley wrote:
>> Have you considered adding articles about 64-bit memory access 
>> programming
>> on VMS and its limits ? Or is everyone already (painfully :-)) aware 

> I decided to do it anyway.
> 
> And it turned out to be more than 3 pages to write.
> 
> Pre-release for comments:
> 
> https://www.vajhoej.dk/arne/articles/vms64.html


Looks good.  Thanks for doing that.  You may be interested in the
following tidbits that showed up in the release notes for the new
clang++ compiler:

1.3 Differences Between C++ on OpenVMS Itanium and OpenVMS x86

The datatypes 'long', 'size_t', 'nullptr_t', 'ptrdiff_t' are 64-bits
wide on OpenVMS x86 but only 32-bits wide on OpenVMS Itanium.

The default size for pointers is 64-bits on OpenVMS x86 but only 32-bits
on OpenVMS Itanium.




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