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From: "anlauf at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/103474] ICE in simplify_cobound, at
 fortran/simplify.c:4415
Date: Wed, 26 Oct 2022 20:44:50 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D103474

--- Comment #5 from anlauf at gcc dot gnu.org ---
I am now stuck with the following code, which I believe is valid.
(It is accepted by Crayftn and rejected by Intel, but I thought it is
covered by F2018:5.4.7(5)):

program p
  type t
     integer :: a(1,2)
  end type
  class(t), allocatable :: x[:]
  print *, ucobound (x%a)
end

The problem I have is that gfc_conv_expr_descriptor invokes walk_coarray,
but the result depends on the rank of the array a in type t.
The comment before walk_coarray states:

/* Convert the last ref of a scalar coarray from an AR_ELEMENT to an
   AR_FULL, suitable for the scalarizer.  */

However, we should find a way to only extract the "co-descriptor".
We might also need that when implement COSHAPE.=