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From: "gscfq@t-online.de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/107922] New: ICE in gfc_simplify_unpack, at
 fortran/simplify.cc:8473
Date: Tue, 29 Nov 2022 17:53:33 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D107922

            Bug ID: 107922
           Summary: ICE in gfc_simplify_unpack, at
                    fortran/simplify.cc:8473
           Product: gcc
           Version: 13.0
            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 :


$ cat z1.f90
program p
   type t
   end type
   integer, parameter :: a(2) =3D 1
   type(t), parameter :: b(2) =3D unpack(a,[.false.,.true.,.false.],a)
end


$ cat z2.f90
program p
   type t
   end type
   integer, parameter :: a(2) =3D 1
   type(t), parameter :: b(3) =3D unpack(a,[.false.,.true.,.false.],a)
end


$ gfortran-13-20221127 -c z1.f90
f951: internal compiler error: Segmentation fault
0xda00af crash_signal
        ../../gcc/toplev.cc:314
0x85b088 gfc_simplify_unpack(gfc_expr*, gfc_expr*, gfc_expr*)
        ../../gcc/fortran/simplify.cc:8473
0x7d2b3a do_simplify
        ../../gcc/fortran/intrinsic.cc:4677
0x7dda1a gfc_intrinsic_func_interface(gfc_expr*, int)
        ../../gcc/fortran/intrinsic.cc:5056
0x833fe8 resolve_unknown_f
        ../../gcc/fortran/resolve.cc:2990
0x833fe8 resolve_function
        ../../gcc/fortran/resolve.cc:3347
0x833fe8 gfc_resolve_expr(gfc_expr*)
        ../../gcc/fortran/resolve.cc:7195
0x7c2704 gfc_reduce_init_expr(gfc_expr*)
        ../../gcc/fortran/expr.cc:3168
0x7c5690 gfc_match_init_expr(gfc_expr**)
        ../../gcc/fortran/expr.cc:3216
0x7af4fb variable_decl
        ../../gcc/fortran/decl.cc:3028
0x7af4fb gfc_match_data_decl()
        ../../gcc/fortran/decl.cc:6331
0x81bf43 match_word
        ../../gcc/fortran/parse.cc:67
0x81bf43 decode_statement
        ../../gcc/fortran/parse.cc:378
0x81d98a next_free
        ../../gcc/fortran/parse.cc:1402
0x81d98a next_statement
        ../../gcc/fortran/parse.cc:1634
0x81f3cb parse_spec
        ../../gcc/fortran/parse.cc:4190
0x8225dc parse_progunit
        ../../gcc/fortran/parse.cc:6237
0x823ca1 gfc_parse_file()
        ../../gcc/fortran/parse.cc:6782
0x871bef gfc_be_parse_file
        ../../gcc/fortran/f95-lang.cc:229=