[Bug fortran/65397] [Coarrays][OOP] ICE in resolve_ordinary_assign

[burnus at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65397

--- Comment #2 from Tobias Burnus <burnus at gcc dot gnu.org> ---
The problem is in resolve_ordinary_assign (resolve.c):

9428      /* Assign the 'data' of a class object to a derived type.  */
9429      if (lhs->ts.type == BT_DERIVED
9430          && rhs->ts.type == BT_CLASS)
9431        gfc_add_data_component (rhs);

But the RHS is:

(gdb) p rhs->expr_type
$2 = EXPR_FUNCTION
(gdb) p rhs->symtree->name
$3 = 0x7ffff1f45f90 "_F.caf_get"

And adding "._data" fails in class.c as:

211       gfc_symbol *derived = e->symtree->n.sym->ts.u.derived;
(gdb) p e->symtree->n.sym->ts.u.derived
$4 = (gfc_symbol *) 0x0