[Bug fortran/88357] New: ICE in parse_associate, at fortran/parse.c:4568

[gscfq@t-online.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88357

            Bug ID: 88357
           Summary: ICE in parse_associate, at fortran/parse.c:4568
           Product: gcc
           Version: 9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gscfq@t-online.de
  Target Milestone: ---

With invalid code, down to at least gcc-5 :


$ cat z1.f90
program p
   type t
   end type
   class(t) :: x[*]
   associate (y => x)
   end associate
end


$ gfortran-9-20181202 -c z1.f90 -fcoarray=single
f951: internal compiler error: Segmentation fault
0xc8f33f crash_signal
        ../../gcc/toplev.c:326
0x69b4b9 parse_associate
        ../../gcc/fortran/parse.c:4568
0x69b4b9 parse_executable
        ../../gcc/fortran/parse.c:5319
0x69bc4f parse_progunit
        ../../gcc/fortran/parse.c:5700
0x69d229 gfc_parse_file()
        ../../gcc/fortran/parse.c:6214
0x6e6a9f gfc_be_parse_file
        ../../gcc/fortran/f95-lang.c:204


---

$ cat z2.f90
program p
   type t
   end type
   class(t), allocatable :: x[:]
   associate (y => x)
   end associate
end


$ gfortran-9-20181202 -c z2.f90 -fcoarray=single
f951: internal compiler error: Segmentation fault
0xb2ec9f crash_signal
        ../../gcc/toplev.c:326
0x684b1b resolve_assoc_var
        ../../gcc/fortran/resolve.c:8750
0x689231 resolve_symbol
        ../../gcc/fortran/resolve.c:14738
0x6acea2 do_traverse_symtree
        ../../gcc/fortran/symbol.c:4151
0x683c64 resolve_types
        ../../gcc/fortran/resolve.c:16623
0x688bcc gfc_resolve(gfc_namespace*)
        ../../gcc/fortran/resolve.c:16737
0x68636b gfc_resolve(gfc_namespace*)
        ../../gcc/fortran/resolve.c:16724
0x68636b resolve_block_construct
        ../../gcc/fortran/resolve.c:10163
0x68636b gfc_resolve_code(gfc_code*, gfc_namespace*)
        ../../gcc/fortran/resolve.c:11493
0x688b0f resolve_codes
        ../../gcc/fortran/resolve.c:16704
0x688bde gfc_resolve(gfc_namespace*)
        ../../gcc/fortran/resolve.c:16739
0x676967 resolve_all_program_units
        ../../gcc/fortran/parse.c:6067
0x676967 gfc_parse_file()
        ../../gcc/fortran/parse.c:6317
0x6bf5ff gfc_be_parse_file
        ../../gcc/fortran/f95-lang.c:204