guaranteed the right to the effective assistance of counsel. McMann v. Richardson, 397 U.S. 759, 771, 90 S.Ct. 1441, 1449, 25 L.Ed.2d 763 (1970); Coplon v. United States, 191 F.2d 749, 757 (D.C.Cir.1951), cert. denied, 342 U.S. 926, 72 S.Ct. 363, 96 L.Ed. 690 (1952). The attorney-client privilege, w