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From: Stephen Leake <stephen.a.leake.1@gsfc.nasa.gov>
Newsgroups: comp.lang.ada
Subject: Re: list strawman
Date: 07 Jan 2002 11:37:27 -0500
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Stephen Leake <stephen.a.leake.1@gsfc.nasa.gov> writes:

> > The List and Iterator Initialize routines have to allocate new list
> > and iterator structures respectively before they do anything else.
> > The list Initialize does this, but the iterator one looks like it
> > tries to dereference the (null) pointer immediately. You say you've
> > tested with iterators, so you must have gotten this to work somehow,
> > but I'm mystified as to how (unless it was the passive iterator
> > generic).
> 
> Yes, I've only used the passive generic (to print the lists), so maybe
> I am missing something. 

I lied. My test case calls "&" (list, list), which uses an explicit
iterator. So this does work, somehow.

I found chasing thru the various layers of Initialize, Adjust, and
Finalize very confusing, espically for functions like "&" that must
allocate a temporary object to return. I have not done a lot of work
with Controlled types, and now I remember one reason why!

-- 
-- Stephe