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From: Kilgallen@SpamCop.net (Larry Kilgallen)
Newsgroups: comp.lang.ada
Subject: Re: Automated conversion to C++?
Date: 17 Feb 2008 13:50:12 -0600
Organization: LJK Software
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In article <47b883a9$0$26403$4d3efbfe@news.sover.net>, "Peter C. Chapin" <pchapin@sover.net> writes:
> Larry Kilgallen wrote:
> 
>> Posix is not an environment in which it is possible to fully implement
>> Ada.
> 
> Why is that?
> 
> I'm not disagreeing with you... I'm just curious and would like to know 
> more.

I am not an expert, but just as a first guess I don't see a way that
Posix could implement "end of line" and "end of page" markers without
using an inline reserved character.  That would make it pretty hard,
for instance, to write a line to a file with a newline character in
the middle of the file.  That might not be a valuable feature to you,
but since I can do it with my Ada compiler today, it would be a limit
to what I can do with my "real" Ada compiler.

I have my suspicious that due to its Unix/C roots, some implementations
of Posix might have trouble writing a file with lines that contain one or
more embedded null.  Unix and C have a habit of acting like no string
would have a null in the middle.