[Bug fortran/103589] New: ICE in gfc_match_varspec, at fortran/primary.c:2551

[gscfq@t-online.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103589

            Bug ID: 103589
           Summary: ICE in gfc_match_varspec, at fortran/primary.c:2551
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gscfq@t-online.de
  Target Milestone: ---

Affects versions down to at least r5 :
(valid z2 works, but not the stripped one)


$ cat z1.f90
integer(size([character::'1'])) :: a
end


$ cat z2.f90
program p
   integer(size([character::'1'])) :: a
   a = 1
end


$ gfortran-12-20211205 -c z1.f90
f951: internal compiler error: Segmentation fault
0xd6497f crash_signal
        ../../gcc/toplev.c:322
0x8383ba gfc_get_default_type(char const*, gfc_namespace*)
        ../../gcc/fortran/symbol.c:231
0x801b32 gfc_match_varspec(gfc_expr*, int, bool, bool)
        ../../gcc/fortran/primary.c:2551
0x804100 gfc_match_rvalue(gfc_expr**)
        ../../gcc/fortran/primary.c:3930
0x7d39be match_primary
        ../../gcc/fortran/matchexp.c:157
0x7d39be match_level_1
        ../../gcc/fortran/matchexp.c:211
0x7d39be match_mult_operand
        ../../gcc/fortran/matchexp.c:267
0x7d3c08 match_add_operand
        ../../gcc/fortran/matchexp.c:356
0x7d3e5c match_level_2
        ../../gcc/fortran/matchexp.c:480
0x7d3fb2 match_level_3
        ../../gcc/fortran/matchexp.c:551
0x7d40a4 match_level_4
        ../../gcc/fortran/matchexp.c:599
0x7d40a4 match_and_operand
        ../../gcc/fortran/matchexp.c:693
0x7d4292 match_or_operand
        ../../gcc/fortran/matchexp.c:722
0x7d4362 match_equiv_operand
        ../../gcc/fortran/matchexp.c:765
0x7d4434 match_level_5
        ../../gcc/fortran/matchexp.c:811
0x7d3811 gfc_match_expr(gfc_expr**)
        ../../gcc/fortran/matchexp.c:870
0x7a1f82 gfc_match_init_expr(gfc_expr**)
        ../../gcc/fortran/expr.c:3189
0x782b05 gfc_match_kind_spec(gfc_typespec*, bool)
        ../../gcc/fortran/decl.c:3241
0x7893a9 gfc_match_decl_type_spec(gfc_typespec*, int)
        ../../gcc/fortran/decl.c:4672
0x78a2e2 gfc_match_prefix(gfc_typespec*)
        ../../gcc/fortran/decl.c:6418