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From: "kaiserkarl31 at yahoo dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/107900] New: Select type with intrinsic type inside
 associate causes ICE / Segmenation fault
Date: Mon, 28 Nov 2022 20:43:33 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: new
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: fortran
X-Bugzilla-Version: 12.2.1
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X-Bugzilla-Severity: normal
X-Bugzilla-Who: kaiserkarl31 at yahoo dot com
X-Bugzilla-Status: UNCONFIRMED
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X-Bugzilla-Priority: P3
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D107900

            Bug ID: 107900
           Summary: Select type with intrinsic type inside associate
                    causes ICE / Segmenation fault
           Product: gcc
           Version: 12.2.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: kaiserkarl31 at yahoo dot com
  Target Milestone: ---

Using a polymorphic derived type element in a select type statement is not
allowed, but placing it in an associate block causes an internal compiler e=
rror
if one of the "type is" statements includes an intrinsic type. The following
program is enough to reproduce it in GFortran 12.2.1:

program test

   class(*), pointer :: ptr
   associate (c =3D> ptr)
      select type (c)
         type is (integer)
            print *, 'integer'
      end select
   end associate

end program test

Note that the above program wouldn't run, as "ptr" isn't associated with
anything, but it shouldn't generate an ICE either.=