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-- C37217C.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 WHETHER THE OPTIONAL COMPATIBILITY CHECK IS

--     PERFORMED WHEN A DISCRIMINANT CONSTRAINT IS GIVEN FOR AN ACCESS

--     TYPE - WHEN THERE IS A "LOOP" IN THE DESIGNATED TYPE'S FULL

--     DECLARATION.

-- HISTORY:

--     DHH 08/04/88 CREATED ORIGINAL TEST.

WITH REPORT; USE REPORT;

PROCEDURE C37217C IS

BEGIN  --C37217C BODY

     TEST ("C37217C", "CHECK WHETHER THE OPTIONAL COMPATIBILITY " &

                      "CHECK IS PERFORMED WHEN A DISCRIMINANT " &

                      "CONSTRAINT IS GIVEN FOR AN ACCESS TYPE " &

                      "- WHEN THERE IS A ""LOOP"" IN THE DESIGNATED " &

                      "TYPE'S FULL DECLARATION");

     BEGIN

          DECLARE

               TYPE R1(D1 : INTEGER);

               TYPE R2(D2 : INTEGER);

               TYPE R3(D3 : POSITIVE);

               TYPE ACC_R1 IS ACCESS R1;

               TYPE ACC_R2 IS ACCESS R2;

               TYPE ACC_R3 IS ACCESS R3;

               TYPE R1(D1 : INTEGER) IS

                    RECORD

                         C1 : ACC_R2(D1);

                    END RECORD;

               TYPE R2(D2 : INTEGER) IS

                    RECORD

                         C2 : ACC_R3(D2);

                    END RECORD;

               TYPE R3(D3 : POSITIVE) IS

                    RECORD

                         C3 : ACC_R1(D3);

                    END RECORD;

                X1 : ACC_R1(IDENT_INT(0));

          BEGIN

               COMMENT("OPTIONAL COMPATIBILITY CHECK NOT PERFORMED");

               X1 := NEW R1'(D1 =>IDENT_INT(0),

                             C1 => NEW R2'(D2 => IDENT_INT(0),

                                           C2 => NEW R3(IDENT_INT(0))));

               FAILED("CONSTRAINT_ERROR NOT RAISED");

               IF IDENT_INT(X1.C1.C2.D3) /= IDENT_INT(0) THEN

                    COMMENT("THIS LINE SHOULD NOT PRINT OUT");

               END IF;

          EXCEPTION

               WHEN CONSTRAINT_ERROR =>

                    NULL;

               WHEN OTHERS =>

                    FAILED("UNEXPECTED EXCEPTION RAISED IN " &

                           "VARIABLE USE - LOOPED");

          END;

     EXCEPTION

          WHEN CONSTRAINT_ERROR =>

               COMMENT("OPTIONAL COMPATIBILITY CHECK PERFORMED");

          WHEN OTHERS =>

               FAILED("UNEXPECTED EXCEPTION RAISED IN " &

                      "VARIABLE DECLARATION - LOOPED");

     END;

     RESULT;

END C37217C;  -- BODY