gcc/testsuite/ada/acats/tests/c5/c52009a.ada

   1 -- C52009A.ADA
   2
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   6 --     F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained
   7 --     unlimited rights in the software and documentation contained herein.
   8 --     Unlimited rights are defined in DFAR 252.227-7013(a)(19).  By making
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  11 --     These rights include rights to use, duplicate, release or disclose the
  12 --     released technical data and computer software in whole or in part, in
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  14 --     to do so.
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  16 --                                    DISCLAIMER
  17 --
  18 --     ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR
  19 --     DISCLOSED ARE AS IS.  THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED
  20 --     WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE
  21 --     SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE
  22 --     OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A
  23 --     PARTICULAR PURPOSE OF SAID MATERIAL.
  24 --*
  25 -- CHECK THAT A RECORD VARIABLE DESIGNATED BY AN ACCESS VALUE CANNOT
  26 -- HAVE ITS DISCRIMINANT ALTERED, EVEN BY A COMPLETE RECORD
  27 -- ASSIGNMENT, AND EVEN THOUGH THE THE TARGET ACCESS VARIABLE IS NOT
  28 -- CONSTRAINED TO A SPECIFIC DISCRIMINANT VALUE.  ATTEMPTING TO
  29 -- CHANGE THE TARGET'S DISCRIMINANT RAISES CONSTRAINT_ERROR AND LEAVES
  30 -- THE TARGET RECORD UNALTERED.  THIS  TEST USES STATIC DISCRIMINANT
  31 -- VALUES.
  32
  33 -- ASL 6/25/81
  34 -- SPS 10/26/82
  35
  36 WITH REPORT;
  37 PROCEDURE C52009A IS
  38
  39      USE REPORT;
  40
  41      TYPE REC (DISC : INTEGER) IS
  42           RECORD
  43                COMP : INTEGER;
  44           END RECORD;
  45
  46      TYPE REC_NAME IS ACCESS REC;
  47
  48      HR : REC_NAME := NEW REC'(5,0);
  49
  50 BEGIN
  51
  52      TEST ("C52009A", "CANNOT CHANGE, THROUGH ASSIGNMENT, THE " &
  53            "(STATIC) DISCRIMINANT VALUE OF A RECORD DESIGNATED " &
  54            "BY AN ACCESS VALUE");
  55
  56      BEGIN
  57           HR.ALL := (DISC => 5, COMP => 3);
  58           IF HR.ALL /= (5,3) THEN
  59                FAILED ("LEGAL ASSIGNMENT FAILED");
  60           END IF;
  61           HR.ALL := (DISC => 4, COMP => 2);
  62           FAILED ("RECORD ASSIGNED VALUE WITH DIFFERENT DISCRIMINANT " &
  63                   "VALUE");
  64      EXCEPTION
  65           WHEN CONSTRAINT_ERROR =>
  66                IF HR.ALL /= (5,3) THEN
  67                     FAILED ("TARGET RECORD VALUE ALTERED BY " &
  68                             "ASSIGNMENT WITH A DIFFERENT " &
  69                             "DISCRIMINANT VALUE EVEN AFTER " &
  70                             "CONSTRAINT_ERROR RAISED");
  71                END IF;
  72           WHEN OTHERS => FAILED ("WRONG EXCEPTION");
  73      END;
  74
  75      RESULT;
  76
  77 END C52009A;