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From: Matthew Heaney <matthew_heaney@acm.org>
Subject: Re: How do I pass a  pointer from a C function to Ada83?
Date: 1999/01/10
Message-ID: <m3emp3ewpi.fsf@mheaney.ni.net>#1/1
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References: <778sp0$50p$1@holly.prod.itd.earthlink.net>
NNTP-Posting-Date: Sat, 09 Jan 1999 17:33:57 PDT
Newsgroups: comp.lang.ada
Date: 1999-01-10T00:00:00+00:00
List-Id: <comp.lang.ada>

"boolaz" <boolaz@earthlink.net> writes:

> I am trying to pass an array pointer from a C function to my Ada83 program.
> I can't seem to get the pragma interface, access type, and/or system.address
> stuff to work.  Any suggestions?


You must provide the smallest example that will compile.  We can't help
you without a sample of code.

That being said, here are some ideas.

o  You probably don't need to use System.Address anywhere.  Interface
and Convention pragmas largely obviate the need for typeless interface
programming. 

o  Be careful with an access type that designates an uncontrained array
subtype.  

o  Are you using the types in package Interfaces.C and its children?