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1 149 jeremybenn
-- C52009A.ADA
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--                             Grant of Unlimited Rights
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--
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--     Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687,
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--     F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained 
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--     unlimited rights in the software and documentation contained herein.
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--     Unlimited rights are defined in DFAR 252.227-7013(a)(19).  By making 
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--     this public release, the Government intends to confer upon all 
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--     recipients unlimited rights  equal to those held by the Government.  
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--     These rights include rights to use, duplicate, release or disclose the 
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--     released technical data and computer software in whole or in part, in 
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--     any manner and for any purpose whatsoever, and to have or permit others 
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--     to do so.
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--
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--                                    DISCLAIMER
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--
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--     ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR
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--     DISCLOSED ARE AS IS.  THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED 
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--     WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE
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--     SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE 
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--     OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A
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--     PARTICULAR PURPOSE OF SAID MATERIAL.
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--*
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-- CHECK THAT A RECORD VARIABLE DESIGNATED BY AN ACCESS VALUE CANNOT
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-- HAVE ITS DISCRIMINANT ALTERED, EVEN BY A COMPLETE RECORD
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-- ASSIGNMENT, AND EVEN THOUGH THE THE TARGET ACCESS VARIABLE IS NOT 
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-- CONSTRAINED TO A SPECIFIC DISCRIMINANT VALUE.  ATTEMPTING TO
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-- CHANGE THE TARGET'S DISCRIMINANT RAISES CONSTRAINT_ERROR AND LEAVES 
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-- THE TARGET RECORD UNALTERED.  THIS  TEST USES STATIC DISCRIMINANT 
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-- VALUES.
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-- ASL 6/25/81
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-- SPS 10/26/82
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WITH REPORT;
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PROCEDURE C52009A IS
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     USE REPORT;
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     TYPE REC (DISC : INTEGER) IS
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          RECORD
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               COMP : INTEGER;
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          END RECORD;
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     TYPE REC_NAME IS ACCESS REC;
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     HR : REC_NAME := NEW REC'(5,0);
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BEGIN
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     TEST ("C52009A", "CANNOT CHANGE, THROUGH ASSIGNMENT, THE " &
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           "(STATIC) DISCRIMINANT VALUE OF A RECORD DESIGNATED " &
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           "BY AN ACCESS VALUE");
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     BEGIN
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          HR.ALL := (DISC => 5, COMP => 3);
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          IF HR.ALL /= (5,3) THEN
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               FAILED ("LEGAL ASSIGNMENT FAILED");
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          END IF;
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          HR.ALL := (DISC => 4, COMP => 2);
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          FAILED ("RECORD ASSIGNED VALUE WITH DIFFERENT DISCRIMINANT " &
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                  "VALUE");
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     EXCEPTION
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          WHEN CONSTRAINT_ERROR =>
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               IF HR.ALL /= (5,3) THEN
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                    FAILED ("TARGET RECORD VALUE ALTERED BY " &
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                            "ASSIGNMENT WITH A DIFFERENT " &
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                            "DISCRIMINANT VALUE EVEN AFTER " &
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                            "CONSTRAINT_ERROR RAISED");
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               END IF;
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          WHEN OTHERS => FAILED ("WRONG EXCEPTION");
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     END;
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     RESULT;
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END C52009A;

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