Re: RPG400-L Digest V2 #364

[boldt@xxxxxxxxxx]

Jim wrote:
>Hmm... if it is not the RPG compiler that decides the placement,
>is it the MI compiler (I assume there is one) or the run time
>program?
>
>Just what is it that places the variables in such an interesting
>alignment?

Is the alignment really that interesting?  Get a life!  :-)

There are two aspects:

First, the compiler doesn't specify the exact alignment, but as I
said before, it does specify minimum required alignment for static
and automatic variables.  If the translator (no MI compiler here)
does more, then consider yourself lucky.  But don't count on it
too much.

Second, storage allocated dynamically at run-time using opcode
ALLOC is always 16-byte aligned.  Thus, if you allocate storage
using ALLOC, based data structures can contain pointers with no
problems.

It's Monday.  Welcome to the Working Week!  (Elvis is King)


Hans Boldt, ILE RPG Development, IBM Toronto Lab, boldt@ca.ibm.com

+---
| This is the RPG/400 Mailing List!
| To submit a new message, send your mail to RPG400-L@midrange.com.
| To subscribe to this list send email to RPG400-L-SUB@midrange.com.
| To unsubscribe from this list send email to RPG400-L-UNSUB@midrange.com.
| Questions should be directed to the list owner/operator: david@midrange.com
+---