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From: Mats Weber <Mats.Weber@elca-matrix.ch>
Subject: Re: Finding a record representation used by gnat
Date: 1998/11/05
Message-ID: <3641D877.6EC9BFCC@elca-matrix.ch>#1/1
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Date: 1998-11-05T00:00:00+00:00
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Mark wrote:
> 
> Is it possible to find the representation used for a record compiled using
> GNAT 3.11a2 (DEC ALPHA).
> I was hoping that either a gcc switch or a gnat utility to tell me this.
> 
> For those who want to know why ...
> 
> I am also compiling the same source using GNAT 3.10p under NT, and then
> sending messages between the two different machine. As expected they
> allocate fields differently.

Don't do that. Different versions of the same compiler on the same
platform may come up with different record layouts. And there are also
big endian/little endian and alignment issues.

You should either use GLADE (or parts thereof) or create your own
architecture-independent protocol for transmitting your data.