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-- C97117B.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.
--*
-- CHECK THAT AN ELSE PART IS EXECUTED IF ALL ALTERNATIVES ARE CLOSED OR
-- IF THERE ARE NO TASKS QUEUED FOR OPEN ALTERNATIVES.

-- WRG 7/10/86

with Impdef;
WITH REPORT; USE REPORT;
PROCEDURE C97117B IS

BEGIN

     TEST ("C97117B", "CHECK THAT AN ELSE PART IS EXECUTED IF ALL " &
                      "ALTERNATIVES ARE CLOSED OR IF THERE ARE NO " &
                      "TASKS QUEUED FOR OPEN ALTERNATIVES");

     DECLARE

          TASK T IS
               ENTRY E;
               ENTRY NO_GO;
          END T;

          TASK BODY T IS
          BEGIN
               -- ENSURE THAT NO_GO HAS BEEN CALLED BEFORE PROCEEDING:
               WHILE NO_GO'COUNT = 0 LOOP
                    DELAY 1.0 * Impdef.One_Second;
               END LOOP;

               SELECT
                    WHEN IDENT_BOOL (FALSE) =>
                         ACCEPT E;
                         FAILED ("CLOSED ACCEPT ALTERNATIVE TAKEN " &
                                 "FOR NONEXISTENT ENTRY CALL - 1");
               OR
                    WHEN IDENT_BOOL (FALSE) =>
                         ACCEPT NO_GO;
                         FAILED ("CLOSED ALTERNATIVE TAKEN - 1");
               ELSE
                    COMMENT ("ELSE PART EXECUTED - 1");
               END SELECT;

               SELECT
                    ACCEPT E;
                    FAILED ("ACCEPTED NONEXISTENT ENTRY CALL - 2");
               OR WHEN IDENT_BOOL (FALSE) =>
                    ACCEPT NO_GO;
                    FAILED ("CLOSED ALTERNATIVE TAKEN - 2");
               ELSE
                    COMMENT ("ELSE PART EXECUTED - 2");
               END SELECT;

               ACCEPT NO_GO;
          END T;

     BEGIN

          T.NO_GO;

     END;

     RESULT;

END C97117B;