[Bug fortran/95501] New: ICE in gfc_match_pointer_assignment, at fortran/match.c:1422

[gs...@t-online.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95501

            Bug ID: 95501
           Summary: ICE in gfc_match_pointer_assignment, at
                    fortran/match.c:1422
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gs...@t-online.de
  Target Milestone: ---

Changed between 20181028 (error) and 20181104 (ICE) :


$ cat z1.f90
program p
   integer, target :: a = 2
   integer, pointer :: z
   z%kind => a%kind
   z%kind => a
end


$ cat z2.f90
program p
   character, target :: a = 'a'
   character, pointer :: z
   z%kind => a
   z%kind => a%kind
   z%len => a
   z%len => a%len
   a%kind => a%len
   a%len => a%kind
end


$ gfortran-11-20200531 -c z1.f90
f951: internal compiler error: Segmentation fault
0xbc37bf crash_signal
        ../../gcc/toplev.c:328
0x686c67 gfc_match_pointer_assignment()
        ../../gcc/fortran/match.c:1422
0x6aa97b match_word
        ../../gcc/fortran/parse.c:65
0x6aa97b decode_statement
        ../../gcc/fortran/parse.c:362
0x6ac41a next_free
        ../../gcc/fortran/parse.c:1279
0x6ac41a next_statement
        ../../gcc/fortran/parse.c:1511
0x6ada6b parse_spec
        ../../gcc/fortran/parse.c:3922
0x6b083c parse_progunit
        ../../gcc/fortran/parse.c:5851
0x6b1f19 gfc_parse_file()
        ../../gcc/fortran/parse.c:6392
0x6fdfff gfc_be_parse_file
        ../../gcc/fortran/f95-lang.c:210