System cleanup

[Didier Verna]

"Robert Goldman" <rpgoldman at sift.info> wrote:

> This one seems complex enough -- and so much trouble to make a MWE --
> that maybe you want to just change it and see if it breaks.

  Yup, that's what I did locally, with recent versions of all compilers
  I have. Those shipping with ASDF seem to all have 3.2.0 at least now,
  but I was a bit curious as to when exactly the issues were fixed, and
  too lazy to investigate the change logs by myself ;-)

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