rb_dlptr_s_to_ptr  456 ext/dl/cptr.c      rb_define_singleton_method(rb_cDLCPtr, "to_ptr", rb_dlptr_s_to_ptr, 1);
rb_dlptr_s_to_ptr  457 ext/dl/cptr.c      rb_define_singleton_method(rb_cDLCPtr, "[]", rb_dlptr_s_to_ptr, 1);