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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;