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+-- C52009B.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 A RECORD VARIABLE DESIGNATED BY AN ACCESS VALUE CANNOT
+-- HAVE ITS DISCRIMINANT ALTERED, EVEN BY A COMPLETE RECORD
+-- ASSIGNMENT, AND EVEN THOUGH THE THE TARGET ACCESS VARIABLE IS NOT 
+-- CONSTRAINED TO A SPECIFIC DISCRIMINANT VALUE.  ATTEMPTING TO
+-- CHANGE THE TARGET'S DISCRIMINANT RAISES CONSTRAINT_ERROR AND LEAVES 
+-- THE TARGET RECORD UNALTERED.  THIS TEST USES NON-STATIC DISCRIMINANT 
+-- VALUES AND A TYPE WITH DEFAULT DISCRIMINANTS.
+ 
+-- ASL 7/6/81
+-- SPS 10/26/82
+-- JBG 1/10/84
+
+WITH REPORT;
+PROCEDURE C52009B IS
+ 
+     USE REPORT;
+ 
+     TYPE REC(DISC : INTEGER := 5) IS
+          RECORD
+               COMP : INTEGER := 0;
+          END RECORD;
+ 
+     TYPE REC_NAME IS ACCESS REC;
+ 
+     HR : REC_NAME := NEW REC;
+ 
+BEGIN
+ 
+     TEST ("C52009B", "CANNOT CHANGE, THROUGH ASSIGNMENT, THE " &
+           "(DYNAMIC) DISCRIMINANT VALUE OF A RECORD DESIGNATED " &
+           "BY AN ACCESS VALUE");
+ 
+     BEGIN
+          HR.ALL := (DISC => IDENT_INT(5), COMP => 3);
+          IF HR.ALL /= (IDENT_INT(5),3) THEN
+               FAILED ("LEGAL ASSIGNMENT FAILED");
+          END IF;
+     EXCEPTION
+          WHEN CONSTRAINT_ERROR => 
+               FAILED ("CONSTRAINT_ERROR RAISED WHEN DISCRIMINANT " &
+                       "VALUE NOT CHANGED");
+     END;
+
+     BEGIN
+          HR.ALL := (DISC => IDENT_INT(4), COMP => 2);
+          FAILED ("RECORD ASSIGNED VALUE WITH DIFFERENT DISCRIMINANT " &
+                  "VALUE");
+     EXCEPTION
+          WHEN CONSTRAINT_ERROR =>
+               COMMENT ("DETECTED ATTEMPT TO CHANGE DISCRIMINANT " &
+                        "VALUE");
+          WHEN OTHERS => FAILED ("WRONG EXCEPTION");
+     END;
+ 
+     RESULT;
+ 
+END C52009B;