https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82971
--- Comment #1 from G. Steinmetz <gs...@t-online.de> ---
$ cat z2.f90
module m
type t
end type
class(t), target :: z
type t2
class(t), pointer :: x => z
end type
end
$ gfortran-8-20171112 -c z2.f90
f951: internal compiler error: Segmentation fault
0xb61c7f crash_signal
../../gcc/toplev.c:325
0x6760cb gfc_find_vtab(gfc_typespec*)
../../gcc/fortran/class.c:2837
0x699092 gfc_check_pointer_assign(gfc_expr*, gfc_expr*)
../../gcc/fortran/expr.c:3738
0x699dca gfc_check_assign_symbol(gfc_symbol*, gfc_component*, gfc_expr*)
../../gcc/fortran/expr.c:3947
0x706aaa resolve_component
../../gcc/fortran/resolve.c:13870
0x7072a2 resolve_fl_derived0
../../gcc/fortran/resolve.c:13982
0x70750b resolve_fl_derived
../../gcc/fortran/resolve.c:14077
0x7020cf resolve_symbol
../../gcc/fortran/resolve.c:14436
0x71cb8b do_traverse_symtree
../../gcc/fortran/symbol.c:4157
0x70548a resolve_types
../../gcc/fortran/resolve.c:16328
0x700dbc gfc_resolve(gfc_namespace*)
../../gcc/fortran/resolve.c:16442
0x6eac74 gfc_parse_file()
../../gcc/fortran/parse.c:6232
0x72f13f gfc_be_parse_file
../../gcc/fortran/f95-lang.c:204
