rb_fiddle_ptr_eql  707 ext/fiddle/pointer.c     rb_define_method(rb_cPointer, "==", rb_fiddle_ptr_eql, 1);
rb_fiddle_ptr_eql  708 ext/fiddle/pointer.c     rb_define_method(rb_cPointer, "eql?", rb_fiddle_ptr_eql, 1);