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From: Simon Wright <simon@pushface.org>
Newsgroups: comp.lang.ada
Subject: Re: How to get Ada to ?cross the chasm??
Date: Thu, 03 May 2018 18:00:18 +0100
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Date: 2018-05-03T18:00:18+01:00
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Niklas Holsti <niklas.holsti@tidorum.invalid> writes:

> I doubt that. IANAL, but I think most bug fixes are so small that
> copyright would not apply. If the correction to "N := N + 1" is to
> change it to "N := N - 1", I do not believe that AdaCore could claim
> copyright to the correction. Copyright also cannot be claimed on
> things that can essentially be done in only one way, that is, when the
> "expression" (the code) of the idea is implicit in the idea itself.
>
> A direct importation of entire modules or larger pieces of code from
> the AdaCore run-time to the FSF run-time could be a violation of
> copyright. A re-implemenation of the module, even using the same
> algorithms as used by AdaCore, would not, AIUI, be a copyright
> violation. This is not about patentable ideas, but about expression of
> ideas.

Not actually copyright, since (judging by the 2017 CE) it's assigned to
the FSF anyway. It's a licencing issue.