[Bug fortran/85002] New: [7/8 Regression] ICE in fold_ternary_loc, at fold-const.c:11360

[gscfq@t-online.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85002

            Bug ID: 85002
           Summary: [7/8 Regression] ICE in fold_ternary_loc, at
                    fold-const.c:11360
           Product: gcc
           Version: 8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gscfq@t-online.de
  Target Milestone: ---

Changed between 20161127 and 20161204.
Needs option -fcoarray=single or -fcoarray=lib.


$ cat z1.f90
program p
   type t
      integer, allocatable :: a(:)
   end type
   type t2
      type(t), allocatable :: b(:)
   end type
   type(t) :: x
   type(t2) :: y(2)[*]
   allocate (x%a(2))
   x%a = 123
   y = t2([x])
end


$ gfortran-7-20161127 -c z1.f90 -fcoarray=single
$ gfortran-7-20161127 -c z1.f90 -fcoarray=lib
$
$ gfortran-8-20180318 -c z1.f90 -fcoarray=single
z1.f90:12:0:

    y = t2([x])

internal compiler error: Segmentation fault
0xb9bd5f crash_signal
        ../../gcc/toplev.c:325
0x91b998 fold_ternary_loc(unsigned int, tree_code, tree_node*, tree_node*,
tree_node*, tree_node*)
        ../../gcc/fold-const.c:11360
0x91d323 fold_build3_loc(unsigned int, tree_code, tree_node*, tree_node*,
tree_node*, tree_node*)
        ../../gcc/fold-const.c:12388
0x75d91a structure_alloc_comps
        ../../gcc/fortran/trans-array.c:8848
0x75d510 structure_alloc_comps
        ../../gcc/fortran/trans-array.c:8403
0x75d9b5 structure_alloc_comps
        ../../gcc/fortran/trans-array.c:8955
0x777a91 gfc_trans_scalar_assign(gfc_se*, gfc_se*, gfc_typespec, bool, bool,
bool)
        ../../gcc/fortran/trans-expr.c:8936
0x7861f9 gfc_trans_assignment_1
        ../../gcc/fortran/trans-expr.c:10260
0x74a3b7 trans_code
        ../../gcc/fortran/trans.c:1828
0x7716b9 gfc_generate_function_code(gfc_namespace*)
        ../../gcc/fortran/trans-decl.c:6507
0x7009c0 translate_all_program_units
        ../../gcc/fortran/parse.c:6121
0x7009c0 gfc_parse_file()
        ../../gcc/fortran/parse.c:6324
0x74755f gfc_be_parse_file
        ../../gcc/fortran/f95-lang.c:204