[Bug fortran/95710] ICE in gfc_type_is_extensible, at fortran/resolve.c:8848

[gscfq--- via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95710

--- Comment #3 from G. Steinmetz <gs...@t-online.de> ---

A few more related test files :


$ cat zz1.f90
module m
   interface
      module subroutine s
      end
   end interface
end
submodule(m) m2
contains
   subroutine s
      class(*), allocatable :: x
      class(*), allocatable :: x
   end
end


$ cat zz2.f90
module m
   interface
      module function s()
      end
   end interface
end
submodule(m) m2
contains
   function s()
      class(*), allocatable :: x
      class(*), allocatable :: x
   end
end


$ cat zz3.f90
program p
   interface
      module function s()
         class(*), allocatable :: s
         class(*), allocatable :: s
      end
   end interface
end


$ gfortran-12-20211107 -c zz3.f90
f951: internal compiler error: Segmentation fault
0xd4f7bf crash_signal
        ../../gcc/toplev.c:322
0x811d2e resolve_symbol
        ../../gcc/fortran/resolve.c:15582
0x830df2 do_traverse_symtree
        ../../gcc/fortran/symbol.c:4172
0x815254 resolve_types
        ../../gcc/fortran/resolve.c:17453
0x81081c gfc_resolve(gfc_namespace*)
        ../../gcc/fortran/resolve.c:17568
0x7f8ae4 resolve_all_program_units
        ../../gcc/fortran/parse.c:6564
0x7f8ae4 gfc_parse_file()
        ../../gcc/fortran/parse.c:6820
0x845d3f gfc_be_parse_file
        ../../gcc/fortran/f95-lang.c:216