[Bug fortran/102333] New: [9/10/11/12 Regression] ICE in gfc_generate_function_code, at fortran/trans-decl.c:6941

[gscfq--- via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102333

            Bug ID: 102333
           Summary: [9/10/11/12 Regression] ICE in
                    gfc_generate_function_code, at
                    fortran/trans-decl.c:6941
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gs...@t-online.de
  Target Milestone: ---

Started with r7 (before 20180426) :


$ cat z1.f90
function f(x) result(y)
   class(*), pointer :: y
contains
   function g() result(z)
      procedure(f), pointer :: z
   end
end


$ gfortran-6 -c z1.f90
z1.f90:4:25:

    function g() result(z)
                         1
Error: CLASS variable 'z' at (1) must be dummy, allocatable or pointer


$ gfortran-12-20210905 -c z1.f90
z1.f90:6:6:

    6 |    end
      |      1
internal compiler error: Segmentation fault
0xd09e4f crash_signal
        ../../gcc/toplev.c:328
0x83d821 gfc_generate_function_code(gfc_namespace*)
        ../../gcc/fortran/trans-decl.c:6941
0x83c964 gfc_generate_contained_functions
        ../../gcc/fortran/trans-decl.c:5912
0x83c964 gfc_generate_function_code(gfc_namespace*)
        ../../gcc/fortran/trans-decl.c:6850
0x7c2ee6 translate_all_program_units
        ../../gcc/fortran/parse.c:6569
0x7c2ee6 gfc_parse_file()
        ../../gcc/fortran/parse.c:6838
0x80f57f gfc_be_parse_file
        ../../gcc/fortran/f95-lang.c:216