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From: "mikael at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/102043] Wrong array types used for negative stride
 accesses
Date: Sat, 27 Nov 2021 21:43:37 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D102043

Mikael Morin <mikael at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #51839|0                           |1
        is obsolete|                            |

--- Comment #26 from Mikael Morin <mikael at gcc dot gnu.org> ---
Created attachment 51891
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=3D51891&action=3Dedit
latest patch

Here is the patch I have arrived to so far.
I have managed to reduce the number of regressions to 24.
The ones that remain are more and more difficult to analyze and fix, with s=
ome
iterating code for internal io that seems mishandled, and a few bind(c) stu=
ff.
There are also middle-end regressions (loop versioning) that I haven=E2=80=
=99t looked
at.=