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-- C41304A.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.
--*
-- OBJECTIVE:
-- CHECK THAT L.R RAISES CONSTRAINT_ERROR WHEN:
-- L DENOTES AN ACCESS OBJECT HAVING THE VALUE NULL.
-- L IS A FUNCTION CALL DELIVERING THE ACCESS VALUE NULL.
-- HISTORY:
-- WKB 08/14/81
-- JRK 08/17/81
-- SPS 10/26/82
-- TBN 03/26/86 PUT THE NON-EXISTENT COMPONENT CASES INTO C41304B.
-- JET 01/05/88 MODIFIED HEADER FORMAT AND ADDED CODE TO PREVENT
-- OPTIMIZATION.
WITH REPORT; USE REPORT;
PROCEDURE C41304A IS
TYPE R IS
RECORD
I : INTEGER;
END RECORD;
TYPE T IS ACCESS R;
BEGIN
TEST ("C41304A", "CONSTRAINT_ERROR WHEN L IN L.R DENOTES A NULL " &
"ACCESS OBJECT OR A FUNCTION CALL DELIVERING " &
"NULL");
--------------------------------------------------
DECLARE
A : T := NEW R' (I => 1);
J : INTEGER;
BEGIN
IF EQUAL (4, 4) THEN
A := NULL;
END IF;
J := A.I;
FAILED ("CONSTRAINT_ERROR NOT RAISED FOR A NULL ACCESS " &
"OBJECT");
IF EQUAL (J,J) THEN
COMMENT ("NO EXCEPTION RAISED");
END IF;
EXCEPTION
WHEN CONSTRAINT_ERROR =>
NULL;
WHEN OTHERS =>
FAILED ("WRONG EXCEPTION RAISED FOR A NULL ACCESS " &
"OBJECT");
END;
--------------------------------------------------
DECLARE
J : INTEGER;
FUNCTION F RETURN T IS
BEGIN
IF EQUAL (4, 4) THEN
RETURN NULL;
END IF;
RETURN NEW R' (I => 2);
END F;
BEGIN
J := F.I;
FAILED ("CONSTRAINT_ERROR NOT RAISED FOR A FUNCTION CALL " &
"DELIVERING A NULL ACCESS VALUE");
IF EQUAL (J,J) THEN
COMMENT ("NO EXCEPTION RAISED");
END IF;
EXCEPTION
WHEN CONSTRAINT_ERROR =>
NULL;
WHEN OTHERS =>
FAILED ("WRONG EXCEPTION RAISED FOR A FUNCTION CALL " &
"DELIVERING A NULL ACCESS VALUE");
END;
RESULT;
END C41304A;
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