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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;
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