[Bug fortran/93578] New: [10 Regression] ICE in add_init_expr_to_sym, at fortran/decl.c:1949

[gscfq@t-online.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93578

            Bug ID: 93578
           Summary: [10 Regression] ICE in add_init_expr_to_sym, at
                    fortran/decl.c:1949
           Product: gcc
           Version: 10.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gscfq@t-online.de
  Target Milestone: ---

This changed between 20200105 and 20200110 :


$ cat z1.f90
program p
   character(3), parameter :: a(4) = 'xyz'
   character(*), parameter :: b(0) = (a(2:1))
   print *, len(b), size(b), b
end


$ gfortran-10-20200105 z1.f90 && ./a.out
           3           0

$ gfortran-10-20200202 -c z1.f90
f951: internal compiler error: in add_init_expr_to_sym, at fortran/decl.c:1949
0x633c15 add_init_expr_to_sym
        ../../gcc/fortran/decl.c:1949
0x63d560 variable_decl
        ../../gcc/fortran/decl.c:2939
0x63d560 gfc_match_data_decl()
        ../../gcc/fortran/decl.c:6120
0x6a0793 match_word
        ../../gcc/fortran/parse.c:65
0x6a0793 decode_statement
        ../../gcc/fortran/parse.c:376
0x6a21da next_free
        ../../gcc/fortran/parse.c:1279
0x6a21da next_statement
        ../../gcc/fortran/parse.c:1511
0x6a382b parse_spec
        ../../gcc/fortran/parse.c:3922
0x6a65fc parse_progunit
        ../../gcc/fortran/parse.c:5851
0x6a7cd9 gfc_parse_file()
        ../../gcc/fortran/parse.c:6392
0x6f295f gfc_be_parse_file
        ../../gcc/fortran/f95-lang.c:210