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From: "asiancorporator at yahoo dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/114308] New: ICE in fold_convert_loc, at
 fold-const.cc:2627
Date: Mon, 11 Mar 2024 16:25:15 +0000
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: fortran
X-Bugzilla-Version: 13.2.0
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X-Bugzilla-Severity: normal
X-Bugzilla-Who: asiancorporator at yahoo dot de
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D114308

            Bug ID: 114308
           Summary: ICE in fold_convert_loc, at fold-const.cc:2627
           Product: gcc
           Version: 13.2.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: asiancorporator at yahoo dot de
  Target Milestone: ---

I am getting an error when I tried to extend an array that is supposed to
contain instances inherited from abstract classes. Ran on macOS Sonoma 14.2=
.1
(M1) with gfortran 13.2.1.

module my_module
  implicit none
  private

  type, abstract, public :: a
  end type

  type, extends(a), public :: b
  end type
end

program main
  use my_module
  implicit none

  class(a), allocatable :: a_array(:)
  type(b) :: b_instance

  a_array =3D [b_instance] ! This line works
  a_array =3D [a_array, b_instance] ! This one throws an ICE
end program

Output:

main.f90                               failed.
[ 50%] Compiling...
app/main.f90:20:58:

   20 |   a_array =3D [a_array, b_instance] ! This one throws an ICE
      |                                                          1
internal compiler error: in fold_convert_loc, at fold-const.cc:2627
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
See <https://github.com/Homebrew/homebrew-core/issues> for instructions.
<ERROR> Compilation failed for object " app_main.f90.o "
<ERROR> stopping due to failed compilation
STOP 1=