Subversion Repositories openrisc

-- C37208B.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.

--*

-- FOR A TYPE WITH DEFAULT DISCRIMINANT VALUES, CHECK THAT A

-- DISCRIMINANT CONSTRAINT CAN BE OMITTED IN A GENERIC FORMAL

-- PARAMETER, AND HENCE, FOR BOTH IN AND IN OUT PARAMETERS, THE

-- 'CONSTRAINED ATTRIBUTE OF THE ACTUAL PARAMETER BECOMES THE

-- 'CONSTRAINED ATTRIBUTE OF THE FORMAL PARAMETER, AND, FOR IN

-- OUT PARAMETERS, IF THE 'CONSTRAINED ATTRIBUTE IS FALSE,

-- ASSIGNMENTS TO THE FORMAL PARAMETERS CAN CHANGE THE

-- DISCRIMINANTS OF THE ACTUAL PARAMETER; IF THE 'CONSTRAINED

-- ATTRIBUTE IS  TRUE, ASSIGNMENTS THAT ATTEMPT TO CHANGE THE

-- DISCRIMINANTS OF THE ACTUAL PARAMETER RAISE CONSTRAINT_ERROR.

-- ASL 7/29/81

-- VKG 1/20/83

-- EDS 7/16/98    AVOID OPTIMIZATION

WITH REPORT;

PROCEDURE C37208B IS

     USE REPORT;

BEGIN

     TEST ("C37208B","FOR TYPES WITH DEFAULT DISCRIMINANT " &

            "VALUES, DISCRIMINANT CONSTRAINTS CAN BE OMITTED " &

            "IN GENERIC FORMAL PARAMETERS, AND THE " &

            "'CONSTRAINED ATTRIBUTE HAS CORRECT VALUES " &

            "DEPENDING ON THE ACTUAL PARAMETERS");

     DECLARE

          TYPE REC(DISC : INTEGER := 7) IS

               RECORD

                    NULL;

               END RECORD;

          KC : CONSTANT REC(3) := (DISC => 3);

          KU : CONSTANT REC := (DISC => 3);

          OBJC1,OBJC2 : REC(3) := (DISC => 3);

          OBJU1,OBJU2 : REC := (DISC => 3);

          GENERIC

               P_IN1 : REC;

               P_IN2 : REC;

               P_IN_OUT : IN OUT REC;

               STATUS : BOOLEAN;

          PROCEDURE PROC;

          PROCEDURE PROC IS

          BEGIN

               IF P_IN1'CONSTRAINED /= TRUE  OR

                  P_IN2'CONSTRAINED /= TRUE  OR

                  P_IN_OUT'CONSTRAINED /= STATUS

               THEN

                    FAILED ("'CONSTRAINED ATTRIBUTES DO NOT MATCH " &

                            "FOR ACTUAL AND FORMAL PARAMETERS");

               END IF;

               IF NOT STATUS THEN

                    BEGIN

                         P_IN_OUT := (DISC => IDENT_INT(7));

                    EXCEPTION

                         WHEN OTHERS =>

                              FAILED ("EXCEPTION RAISED " &

                                      "WHEN TRYING TO " &

                                      "CHANGE UNCONSTRAINED " &

                                      "DISCRIMINANT VALUE");

                    END;

               ELSE

                    BEGIN

                         P_IN_OUT := (DISC => IDENT_INT(7));

                         FAILED ("DISCRIMINANT OF CONSTRAINED " &

                                 "ACTUAL PARAMETER ILLEGALLY " &

                                 "CHANGED BY ASSIGNMENT");

                    EXCEPTION

                         WHEN CONSTRAINT_ERROR => NULL;

                         WHEN OTHERS => FAILED ("WRONG EXCEPTION");

                    END;

               END IF;

          END PROC;

     BEGIN

          DECLARE

               PROCEDURE PROC_C IS NEW PROC(KC,OBJC1,OBJC2,IDENT_BOOL(TRUE));

               PROCEDURE PROC_U IS NEW PROC(KU,OBJU1,OBJU2,IDENT_BOOL(FALSE));

          BEGIN

               PROC_C;

               PROC_U;

               IF OBJU2.DISC /= 7 THEN

               FAILED ("ASSIGNMENT TO UNCONSTRAINED ACTUAL " &

                       "PARAMETER FAILED TO CHANGE DISCRIMINANT ");

               END IF;

          END;

     END;

     RESULT;

END C37208B;