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-- C37208A.ADA (RA #534/1)
-- 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.
--*
-- FOR A TYPE WITH DEFAULT DISCRIMINANT VALUES, CHECK THAT A
-- DISCRIMINANT CONSTRAINT CAN BE OMITTED IN:
-- AN OBJECT DECLARATION, AND HENCE ASSIGNMENTS TO THE OBJECT CAN
-- CHANGE ITS DISCRIMINANTS;
-- A COMPONENT_DECLARATION IN A RECORD TYPE DEFINITION, AND HENCE
-- ASSIGNMENTS TO THE COMPONENT CAN CHANGE THE VALUE OF ITS
-- DISCRIMINANTS;
-- A SUBTYPE INDICATION IN AN ARRAY TYPE DEFINITION, AND HENCE
-- ASSIGNMENTS TO ONE OF THE COMPONENTS CAN CHANGE ITS
-- DISCRIMINANT VALUES;
-- A FORMAL PARAMETER OF A SUBPROGRAM; EXCEPT FOR PARAMETERS OF
-- MODE IN, THE 'CONSTRAINED ATTRIBUTE OF THE ACTUAL PARAMETER
-- BECOMES THE 'CONSTRAINED ATTRIBUTE OF THE FORMAL PARAMETER;
-- FOR IN OUT AND OUT PARAMETERS, IF THE 'CONSTRAINED ATTRIBUTE IS
-- FALSE, ASSIGNMENTS TO THE FORMAL PARAMETER CAN CHANGE THE
-- DISCRIMINANTS OF THE ACTUAL PARAMETER; IF THE 'CONSTRAINED
-- ATTRIBUTE IS TRUE, ASSIGNNMENTS THAT ATTEMPT TO CHANGE THE
-- DISCRIMINANTS OF THE ACTUAL PARAMETER RAISE CONSTRAINT_ERROR.
-- ASL 7/23/81
-- EDS 7/16/98 AVOID OPTIMIZATION
WITH REPORT;
PROCEDURE C37208A IS
USE REPORT;
BEGIN
TEST ("C37208A","DISCRIMINANT CONSTRAINT CAN BE OMITTED " &
"FROM OBJECT DECLARATION, COMPONENT DECLARATION, SUBTYPE " &
"INDICATION OR FORMAL SUBPROGRAM PARAMETER, IF THE TYPE " &
"HAS DEFAULT DISCRIMINANTS");
DECLARE
TYPE REC1(DISC : INTEGER := 7) IS
RECORD
NULL;
END RECORD;
TYPE REC2 IS
RECORD
COMP : REC1;
END RECORD;
R : REC2;
U1,U2,U3 : REC1 := (DISC => 3);
C1,C2,C3 : REC1(3) := (DISC => 3);
ARR : ARRAY(INTEGER RANGE 1..10) OF REC1;
ARR2 : ARRAY (1..10) OF REC1(4);
PROCEDURE PROC(P_IN : IN REC1;
P_OUT : OUT REC1;
P_IN_OUT : IN OUT REC1;
CONSTR : IN BOOLEAN) IS
BEGIN
IF P_OUT'CONSTRAINED /= CONSTR
OR P_IN_OUT'CONSTRAINED /= CONSTR THEN
FAILED ("CONSTRAINED ATTRIBUTES DO NOT MATCH " &
"FOR ACTUAL AND FORMAL PARAMETERS");
END IF;
IF P_IN'CONSTRAINED /= IDENT_BOOL(TRUE) THEN
FAILED ("'CONSTRAINED IS FALSE FOR IN " &
"PARAMETER");
END IF;
IF NOT CONSTR THEN -- UNCONSTRAINED ACTUAL PARAM
P_OUT := (DISC => IDENT_INT(0));
P_IN_OUT := (DISC => IDENT_INT(0));
ELSE
BEGIN
P_OUT := (DISC => IDENT_INT(0));
FAILED ("DISCRIMINANT OF CONSTRAINED ACTUAL " &
"PARAMETER ILLEGALLY CHANGED - 1");
EXCEPTION
WHEN CONSTRAINT_ERROR =>
NULL;
WHEN OTHERS =>
FAILED ("WRONG EXCEPTION - 1");
END;
BEGIN
P_IN_OUT := (DISC => IDENT_INT(0));
FAILED ("DISCRIMINANT OF CONSTRAINED ACTUAL " &
"PARAMETER ILLEGALLY CHANGED - 2");
EXCEPTION
WHEN CONSTRAINT_ERROR => NULL;
WHEN OTHERS =>
FAILED ("WRONG EXCEPTION - 2");
END;
END IF;
END PROC;
BEGIN
IF U1.DISC /= IDENT_INT(3) THEN
FAILED ("INITIAL DISCRIMINANT VALUE WRONG - U1");
END IF;
U1 := (DISC => IDENT_INT(5));
IF U1.DISC /= 5 THEN
FAILED ("ASSIGNMENT FAILED FOR OBJECT");
END IF;
IF R.COMP.DISC /= IDENT_INT(7) THEN
FAILED ("DEFAULT DISCRIMINANT VALUE WRONG - R");
END IF;
R.COMP := (DISC => IDENT_INT(5));
IF R.COMP.DISC /= 5 THEN
FAILED ("ASSIGNMENT FAILED FOR RECORD COMPONENT");
END IF;
FOR I IN 1..10 LOOP
IF ARR(I).DISC /= IDENT_INT(7) THEN
FAILED ("DEFAULT DISCRIMINANT VALUE WRONG - ARR");
END IF;
END LOOP;
ARR(3) := (DISC => IDENT_INT(5));
IF ARR(3).DISC /= 5 THEN
FAILED ("ASSIGNMENT FAILED FOR ARRAY COMPONENT");
END IF;
IF ARR /= (1..2|4..10 => (DISC => 7), 3 => (DISC => 5)) THEN
FAILED ("MODIFIED WRONG COMPONENTS");
END IF;
PROC(C1,C2,C3,IDENT_BOOL(TRUE));
PROC(U1,U2,U3,IDENT_BOOL(FALSE));
IF U2.DISC /= 0 OR U3.DISC /= 0 THEN
FAILED ("ASSIGNMENT TO UNCONSTRAINED ACTUAL PARAMETER " &
"FAILED TO CHANGE DISCRIMINANT");
END IF;
PROC(ARR(1), ARR(3), ARR(4), FALSE);
IF ARR(3).DISC /= 0 OR ARR(4).DISC /= 0 THEN
FAILED ("ARRAY COMPONENT ASSIGNMENTS DIDN'T CHANGE " &
"DISCRIMINANT OF COMPONENT");
END IF;
PROC (ARR2(2), ARR2(5), ARR2(10), TRUE);
END;
RESULT;
END C37208A;
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