tt := *t
			tt.C = &TypeRepr{"%s %s", []interface{}{dt.Kind, tag}}
			// We don't know what the representation of this struct is, so don't let
			// anyone allocate one on the Go side. As a side effect of this annotation,
			// pointers to this type will not be considered pointers in Go. They won't
			// get writebarrier-ed or adjusted during a stack copy. This should handle