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From: "gscfq@t-online.de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/107424] New: [13 Regression] ICE in gfc_trans_omp_do,
 at fortran/trans-openmp.cc:5397
Date: Wed, 26 Oct 2022 18:37:35 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D107424

            Bug ID: 107424
           Summary: [13 Regression] ICE in gfc_trans_omp_do, at
                    fortran/trans-openmp.cc:5397
           Product: gcc
           Version: 13.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gscfq@t-online.de
  Target Milestone: ---

Started between 20220501 and 20220508 :


$ cat z1.f90
program p
   integer :: i, j
   !$omp do simd collapse(2)
   do i =3D 1, 9, 2
      do j =3D 1, i
      end do
   end do
end


$ gfortran-13-20220501 -c z1.f90 -fopenmp
z1.f90:5:17:

    5 |       do j =3D 1, i
      |                 1
Error: !$OMP DO SIMD collapsed loops don't form rectangular iteration space=
 at
(1)


$ gfortran-13-20221023 -c z1.f90 -fopenmp
z1.f90:3:28:

    3 |    !$omp do simd collapse(2)
      |                            1
internal compiler error: in gfc_trans_omp_do, at fortran/trans-openmp.cc:53=
97
0x953457 gfc_trans_omp_do
        ../../gcc/fortran/trans-openmp.cc:5397
0x9549a1 gfc_trans_omp_do_simd
        ../../gcc/fortran/trans-openmp.cc:6526
0x956cd2 gfc_trans_omp_directive(gfc_code*)
        ../../gcc/fortran/trans-openmp.cc:7554
0x8b7897 trans_code
        ../../gcc/fortran/trans.cc:2245
0x8ef2a9 gfc_generate_function_code(gfc_namespace*)
        ../../gcc/fortran/trans-decl.cc:7659
0x8608de translate_all_program_units
        ../../gcc/fortran/parse.cc:6696
0x8608de gfc_parse_file()
        ../../gcc/fortran/parse.cc:7002
0x8aec0f gfc_be_parse_file
        ../../gcc/fortran/f95-lang.cc:229=