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+-- C84009A.ADA
+
+--                             Grant of Unlimited Rights
+--
+--     Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687,
+--     F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained 
+--     unlimited rights in the software and documentation contained herein.
+--     Unlimited rights are defined in DFAR 252.227-7013(a)(19).  By making 
+--     this public release, the Government intends to confer upon all 
+--     recipients unlimited rights  equal to those held by the Government.  
+--     These rights include rights to use, duplicate, release or disclose the 
+--     released technical data and computer software in whole or in part, in 
+--     any manner and for any purpose whatsoever, and to have or permit others 
+--     to do so.
+--
+--                                    DISCLAIMER
+--
+--     ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR
+--     DISCLOSED ARE AS IS.  THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED 
+--     WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE
+--     SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE 
+--     OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A
+--     PARTICULAR PURPOSE OF SAID MATERIAL.
+--*
+-- OBJECTIVE:
+--     CHECK THAT A USE CLAUSE MAKES AN IMPLICITLY OR EXPLICITLY
+--     DECLARED OPERATOR DIRECTLY VISIBLE IF NO HOMOGRAPH OF THE
+--     OPERATOR IS ALREADY DIRECTLY VISIBLE.
+
+-- HISTORY:
+--     JET 03/10/88  CREATED ORIGINAL TEST.
+
+WITH REPORT; USE REPORT;
+PROCEDURE C84009A IS
+
+     TYPE INT IS NEW INTEGER RANGE -100 .. 100;
+
+     PACKAGE PACK IS
+          FUNCTION "+" (LEFT : INTEGER; RIGHT : INT) RETURN INTEGER;
+          FUNCTION "-" (LEFT, RIGHT : INT) RETURN INT;
+          FUNCTION "-" (RIGHT : INT) RETURN INTEGER;
+          FUNCTION "+" (RIGHT : INT) RETURN INTEGER;
+     END PACK;
+
+     FUNCTION "+" (RIGHT : INT) RETURN INTEGER IS
+     BEGIN
+          RETURN INTEGER'(1) + INTEGER(RIGHT);
+     END "+";
+
+     PACKAGE BODY PACK IS
+          FUNCTION "+" (LEFT : INTEGER; RIGHT : INT) RETURN INTEGER IS
+          BEGIN
+               RETURN LEFT + INTEGER(RIGHT);
+          END "+";
+
+          FUNCTION "-" (LEFT, RIGHT : INT) RETURN INT IS
+          BEGIN
+               FAILED ("BINARY ""-"" ALREADY VISIBLE FOR TYPE INT");
+               RETURN LEFT + (-RIGHT);
+          END "-";
+
+          FUNCTION "-" (RIGHT : INT) RETURN INTEGER IS
+          BEGIN
+               RETURN INTEGER'(0) - INTEGER(RIGHT);
+          END "-";
+
+          FUNCTION "+" (RIGHT : INT) RETURN INTEGER IS
+          BEGIN
+               FAILED ("UNARY ""+"" ALREADY VISIBLE FOR TYPE INT");
+               RETURN INTEGER'(0) + INTEGER(RIGHT);
+          END "+";
+     END PACK;
+
+     USE PACK;
+
+BEGIN
+     TEST ("C84009A", "CHECK THAT A USE CLAUSE MAKES AN IMPLICITLY " &
+                      "OR EXPLICITLY DECLARED OPERATOR DIRECTLY " &
+                      "VISIBLE IF NO HOMOGRAPH OF THE OPERATOR IS " &
+                      "ALREADY DIRECTLY VISIBLE");
+
+     IF INTEGER'(10) + INT'(10) /= IDENT_INT(20) THEN
+          FAILED ("INCORRECT RESULT FROM BINARY ""+""");
+     END IF;
+
+     IF INT'(5) - INT'(3) /= INT'(2) THEN
+          FAILED ("INCORRECT RESULT FROM BINARY ""-""");
+     END IF;
+
+     IF -INT'(20) /= IDENT_INT(-INTEGER'(20)) THEN
+          FAILED ("INCORRECT RESULT FROM UNARY ""-""");
+     END IF;
+
+     IF +INT'(20) /= IDENT_INT(+INTEGER'(21)) THEN
+          FAILED ("INCORRECT RESULT FROM UNARY ""+""");
+     END IF;
+
+     RESULT;
+END C84009A;