[Bug fortran/98203] New: [11 Regression] ICE in gfc_trans_omp_do, at fortran/trans-openmp.c:4665

[Bug fortran/98203] New: [11 Regression] ICE in gfc_trans_omp_do, at fortran/trans-openmp.c:4665

[gscfq@t-online.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98203

            Bug ID: 98203
           Summary: [11 Regression] ICE in gfc_trans_omp_do, at
                    fortran/trans-openmp.c:4665
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gscfq@t-online.de
  Target Milestone: ---

Changed between 20200510 and 20200517 :


$ cat z1.f90
program p
   integer :: i, j
   !$omp simd collapse(2)
   do j = 1, 4
      do i = 1, 4, 2
      end do
   end do
end


$ gfortran-11-20200510 -c z1.f90 -fopenmp
$
$ gfortran-11-20201206 -c z1.f90 -fopenmp
z1.f90:3:25:

    3 |    !$omp simd collapse(2)
      |                         1
internal compiler error: in gfc_trans_omp_do, at fortran/trans-openmp.c:4665
0x7918c3 gfc_trans_omp_do
        ../../gcc/fortran/trans-openmp.c:4665
0x793b0f gfc_trans_omp_directive(gfc_code*)
        ../../gcc/fortran/trans-openmp.c:6104
0x729857 trans_code
        ../../gcc/fortran/trans.c:2163
0x74f8b4 gfc_generate_function_code(gfc_namespace*)
        ../../gcc/fortran/trans-decl.c:6880
0x6d6c66 translate_all_program_units
        ../../gcc/fortran/parse.c:6347
0x6d6c66 gfc_parse_file()
        ../../gcc/fortran/parse.c:6616
0x722aef gfc_be_parse_file
        ../../gcc/fortran/f95-lang.c:212

[Bug fortran/98203] [11 Regression] ICE in gfc_trans_omp_do, at fortran/trans-openmp.c:4665

[dominiq at lps dot ens.fr]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98203

Dominique d'Humieres <dominiq at lps dot ens.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|                            |2020-12-08
      Known to work|                            |10.2.1
     Ever confirmed|0                           |1
           Priority|P3                          |P4
      Known to fail|                            |11.0
             Status|UNCONFIRMED                 |NEW

--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Confirmed.

[Bug fortran/98203] [11 Regression] ICE in gfc_trans_omp_do, at fortran/trans-openmp.c:4665 since r11-349-gf884bef21cccc05d

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98203

Martin Liška <marxin at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[11 Regression] ICE in      |[11 Regression] ICE in
                   |gfc_trans_omp_do, at        |gfc_trans_omp_do, at
                   |fortran/trans-openmp.c:4665 |fortran/trans-openmp.c:4665
                   |                            |since
                   |                            |r11-349-gf884bef21cccc05d
   Target Milestone|---                         |11.0
                 CC|                            |burnus at gcc dot gnu.org,
                   |                            |marxin at gcc dot gnu.org

--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Started with r11-349-gf884bef21cccc05d.

[Bug fortran/98203] [11 Regression] ICE in gfc_trans_omp_do, at fortran/trans-openmp.c:4665 since r11-349-gf884bef21cccc05d

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98203

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P4                          |P3

[Bug fortran/98203] [11 Regression] ICE in gfc_trans_omp_do, at fortran/trans-openmp.c:4665 since r11-349-gf884bef21cccc05d

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98203

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jakub at gcc dot gnu.org

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The point of the assert is/was that if the loop is simple, then we've kept it
in the iterator of OMP_FOR and the gimplifier can handle it, but if it is not
simple, the FE is replacing the OMP_FOR iterator with another one and is just
assigning the user variable at the start of the loop; I'm not sure if the
gimplifier handles that case too (there is some code for OMP_FOR_ORIG_DECLS,
perhaps it does, but it needs verification).

[Bug fortran/98203] [11 Regression] ICE in gfc_trans_omp_do, at fortran/trans-openmp.c:4665 since r11-349-gf884bef21cccc05d

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98203

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P4

[Bug fortran/98203] [11/12 Regression] ICE in gfc_trans_omp_do, at fortran/trans-openmp.c:4665 since r11-349-gf884bef21cccc05d

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98203

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|11.0                        |11.2

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 11.1 has been released, retargeting bugs to GCC 11.2.

[Bug fortran/98203] [11/12 Regression] ICE in gfc_trans_omp_do, at fortran/trans-openmp.c:4665 since r11-349-gf884bef21cccc05d

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98203

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|11.2                        |11.3

--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
GCC 11.2 is being released, retargeting bugs to GCC 11.3

[Bug fortran/98203] [11/12 Regression] ICE in gfc_trans_omp_do, at fortran/trans-openmp.c:4665 since r11-349-gf884bef21cccc05d

[gscfq@t-online.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98203

--- Comment #6 from G. Steinmetz <gscfq@t-online.de> ---

This variant started between 20210808 (error) and 20210822 (ICE) :

$ cat z2.f90
program p
   integer :: i, j
   !$omp parallel masked taskloop simd collapse(2)
   do j = 1, 4
      do i = 1, 4, 2
      end do
   end do
end

[Bug fortran/98203] [11/12 Regression] ICE in gfc_trans_omp_do, at fortran/trans-openmp.c:4665 since r11-349-gf884bef21cccc05d

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98203

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|11.3                        |11.4

--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
GCC 11.3 is being released, retargeting bugs to GCC 11.4.

[Bug fortran/98203] [11/12/13/14 Regression] ICE in gfc_trans_omp_do, at fortran/trans-openmp.c:4665 since r11-349-gf884bef21cccc05d

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98203

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|11.4                        |11.5

--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 11.4 is being released, retargeting bugs to GCC 11.5.