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-- C37003A.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.

--*

-- CHECK THAT MULTIPLE COMPONENT DECLARATIONS ARE TREATED AS A SERIES

-- OF SINGLE COMNENT DECLARATIONS, I.E., THE COMPONENTS ALL HAVE THE

-- SAME TYPE AND ANY EXPRESSION USED IN CONSTRAINTS OR INITIALIZATIONS

-- IS EVALUATED ONCE FOR EACH COMPONENT.

-- DAT 3/30/81

-- SPS 10/26/82

-- JWC 10/23/85  RENAMED FROM C37013A-AB.ADA.

--               ADDED TEST TO ENSURE THAT ANY EXPRESSION USED

--               IN A CONSTRAINT IS EVALUATED ONCE FOR EACH

--               COMPONENT.

-- JRK 11/15/85  ADDED INITIALIZATION EVALUATION CHECKS.

WITH REPORT; USE REPORT;

PROCEDURE C37003A IS

     X : INTEGER := 0;

     FUNCTION F RETURN INTEGER IS

     BEGIN

          X := X + 1;

          RETURN X;

     END F;

     PROCEDURE RESET IS

     BEGIN

          X := 0;

     END RESET;

BEGIN

     TEST ("C37003A", "CHECK THAT MULTIPLE COMPONENT DECLARATIONS " &

                      "ARE TREATED AS A SERIES OF SINGLE COMPONENT " &

                      "DECLARATIONS");

     DECLARE

          TYPE ARR IS ARRAY (INTEGER RANGE <>) OF INTEGER;

          TYPE REC1 IS RECORD

               A1, A2 : ARR (1 .. F) := (OTHERS => F);

          END RECORD;

          R1 : REC1 := (OTHERS => (OTHERS => 1));

          Y : INTEGER := X;

          R1A : REC1;

     BEGIN

          IF R1.A1 = R1.A2 THEN        -- TEST TO SEE IF THE COMPONENTS

               NULL;                   -- ARE OF THE SAME TYPE.

          END IF;

          IF Y /= 2 THEN

               FAILED ("CONSTRAINT EXPRESSION NOT EVALUATED TWICE " &

                       "FOR ARRAYS");

          END IF;

          IF X /= 5 THEN

               FAILED ("INITIALIZATION EXPRESSION NOT EVALUATED FOR " &

                       "EACH ARRAY COMPONENT");

          END IF;

          RESET;

     END;

     DECLARE

          TYPE REC2 IS RECORD

               I1, I2 : INTEGER RANGE 1 .. F := F * IDENT_INT(0) + 1;

          END RECORD;

          R2 : REC2 := (OTHERS => 1);

          Y : INTEGER := X;

          R2A : REC2;

     BEGIN

          IF R2.I1 = R2.I2 THEN        -- TEST TO SEE IF THE COMPONENTS

               NULL;                   -- ARE OF THE SAME TYPE.

          END IF;

          IF Y /= 2 THEN

               FAILED ("CONSTRAINT EXPRESSION NOT EVALUATED TWICE " &

                       "FOR SCALARS");

          END IF;

          IF X /= 4 THEN

               FAILED ("INITIALIZATION EXPRESSION NOT EVALUATED FOR " &

                       "EACH SCALAR COMPONENT");

          END IF;

          RESET;

     END;

     DECLARE

          TYPE REC3X (DSC : INTEGER) IS RECORD

               NULL;

          END RECORD;

          TYPE REC3Y IS RECORD

               I : INTEGER;

          END RECORD;

          TYPE REC3 IS RECORD

               RX1, RX2 : REC3X (F);

               RY1, RY2 : REC3Y := (I => F);

          END RECORD;

          R3 : REC3 := ((DSC => 1), (DSC => 2), (I => 0), (I => 0));

          Y : INTEGER := X;

          R3A : REC3;

     BEGIN

          IF R3.RX1 = R3.RX2 THEN       -- TEST TO SEE IF THE COMPONENTS

               NULL;                    -- ARE OF THE SAME TYPE.

          END IF;

          IF Y /= 2 THEN

               FAILED ("CONSTRAINT EXPRESSION NOT EVALUATED TWICE " &

                       "FOR RECORDS");

          END IF;

          IF X /= 4 THEN

               FAILED ("INITIALIZATION EXPRESSION NOT EVALUATED " &

                       "FOR EACH RECORD COMPONENT");

          END IF;

          RESET;

     END;

     DECLARE

          TYPE REC4X (DSC : INTEGER) IS RECORD

               NULL;

          END RECORD;

          TYPE ACR IS ACCESS REC4X;

          TYPE ACI IS ACCESS INTEGER;

          TYPE REC4 IS RECORD

               AC1, AC2 : ACR (F);

               AC3, AC4 : ACI := NEW INTEGER'(F);

          END RECORD;

          R4 : REC4 := (NULL, NULL, NULL, NULL);

          Y : INTEGER := X;

          R4A : REC4;

     BEGIN

          IF R4.AC1 = R4.AC2 THEN       -- TEST TO SEE IF THE COMPONENTS

               NULL;                    -- ARE OF THE SAME TYPE.

          END IF;

          IF Y /= 2 THEN

               FAILED ("CONSTRAINT EXPRESSION NOT EVALUATED TWICE " &

                       "FOR ACCESS");

          END IF;

          IF X /= 4 THEN

               FAILED ("INITIALIZATION EXPRESSION NOT EVALUATED " &

                       "FOR EACH ACCESS COMPONENT");

          END IF;

     END;

     RESULT;

END C37003A;