gcc/testsuite/ada/acats/tests/c3/c37208a.ada

   1 -- C37208A.ADA     (RA #534/1)
   2
   3 --                             Grant of Unlimited Rights
   4 --
   5 --     Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687,
   6 --     F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained
   7 --     unlimited rights in the software and documentation contained herein.
   8 --     Unlimited rights are defined in DFAR 252.227-7013(a)(19).  By making
   9 --     this public release, the Government intends to confer upon all
  10 --     recipients unlimited rights  equal to those held by the Government.
  11 --     These rights include rights to use, duplicate, release or disclose the
  12 --     released technical data and computer software in whole or in part, in
  13 --     any manner and for any purpose whatsoever, and to have or permit others
  14 --     to do so.
  15 --
  16 --                                    DISCLAIMER
  17 --
  18 --     ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR
  19 --     DISCLOSED ARE AS IS.  THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED
  20 --     WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE
  21 --     SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE
  22 --     OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A
  23 --     PARTICULAR PURPOSE OF SAID MATERIAL.
  24 --*
  25 -- FOR A TYPE WITH DEFAULT DISCRIMINANT VALUES, CHECK THAT A
  26 -- DISCRIMINANT CONSTRAINT CAN BE OMITTED IN:
  27
  28      -- AN OBJECT DECLARATION, AND HENCE ASSIGNMENTS TO THE OBJECT CAN
  29      -- CHANGE ITS DISCRIMINANTS;
  30
  31      -- A COMPONENT_DECLARATION IN A RECORD TYPE DEFINITION, AND HENCE
  32      -- ASSIGNMENTS TO THE COMPONENT CAN CHANGE THE VALUE OF ITS
  33      -- DISCRIMINANTS;
  34
  35      -- A SUBTYPE INDICATION IN AN ARRAY TYPE DEFINITION, AND HENCE
  36      -- ASSIGNMENTS TO ONE OF THE COMPONENTS CAN CHANGE ITS
  37      -- DISCRIMINANT VALUES;
  38
  39      -- A FORMAL PARAMETER OF A SUBPROGRAM; EXCEPT FOR PARAMETERS OF
  40      -- MODE IN, THE 'CONSTRAINED ATTRIBUTE OF THE ACTUAL PARAMETER
  41      -- BECOMES THE 'CONSTRAINED ATTRIBUTE OF THE FORMAL PARAMETER;
  42      -- FOR IN OUT AND OUT PARAMETERS, IF THE 'CONSTRAINED ATTRIBUTE IS
  43      -- FALSE, ASSIGNMENTS TO THE FORMAL PARAMETER CAN CHANGE THE
  44      -- DISCRIMINANTS OF THE ACTUAL PARAMETER; IF THE 'CONSTRAINED
  45      -- ATTRIBUTE IS TRUE, ASSIGNNMENTS THAT ATTEMPT TO CHANGE THE
  46      -- DISCRIMINANTS OF THE ACTUAL PARAMETER RAISE CONSTRAINT_ERROR.
  47
  48 -- ASL 7/23/81
  49 -- EDS 7/16/98    AVOID OPTIMIZATION
  50
  51 WITH REPORT;
  52 PROCEDURE C37208A IS
  53
  54      USE REPORT;
  55
  56 BEGIN
  57      TEST ("C37208A","DISCRIMINANT CONSTRAINT CAN BE OMITTED " &
  58            "FROM OBJECT DECLARATION, COMPONENT DECLARATION, SUBTYPE " &
  59            "INDICATION OR FORMAL SUBPROGRAM PARAMETER, IF THE TYPE " &
  60            "HAS DEFAULT DISCRIMINANTS");
  61
  62      DECLARE
  63           TYPE REC1(DISC : INTEGER := 7) IS
  64                RECORD
  65                     NULL;
  66                END RECORD;
  67
  68           TYPE REC2 IS
  69                RECORD
  70                     COMP : REC1;
  71                END RECORD;
  72
  73           R : REC2;
  74           U1,U2,U3 : REC1 := (DISC => 3);
  75           C1,C2,C3 : REC1(3) := (DISC => 3);
  76           ARR : ARRAY(INTEGER RANGE 1..10) OF REC1;
  77           ARR2 : ARRAY (1..10) OF REC1(4);
  78
  79           PROCEDURE PROC(P_IN : IN REC1;
  80                          P_OUT : OUT REC1;
  81                          P_IN_OUT : IN OUT REC1;
  82                          CONSTR : IN BOOLEAN) IS
  83           BEGIN
  84                IF P_OUT'CONSTRAINED /= CONSTR
  85                     OR P_IN_OUT'CONSTRAINED /= CONSTR THEN
  86                     FAILED ("CONSTRAINED ATTRIBUTES DO NOT MATCH " &
  87                               "FOR ACTUAL AND FORMAL PARAMETERS");
  88                END IF;
  89
  90                IF P_IN'CONSTRAINED /= IDENT_BOOL(TRUE) THEN
  91                     FAILED ("'CONSTRAINED IS FALSE FOR IN " &
  92                             "PARAMETER");
  93                END IF;
  94
  95                IF NOT CONSTR THEN     -- UNCONSTRAINED ACTUAL PARAM
  96                     P_OUT := (DISC => IDENT_INT(0));
  97                     P_IN_OUT := (DISC => IDENT_INT(0));
  98                ELSE
  99                     BEGIN
 100                          P_OUT := (DISC => IDENT_INT(0));
 101                          FAILED ("DISCRIMINANT OF CONSTRAINED ACTUAL " &
 102                                  "PARAMETER ILLEGALLY CHANGED - 1");
 103                     EXCEPTION
 104                          WHEN CONSTRAINT_ERROR =>
 105                               NULL;
 106                          WHEN OTHERS =>
 107                               FAILED ("WRONG EXCEPTION - 1");
 108                     END;
 109
 110                     BEGIN
 111                          P_IN_OUT := (DISC => IDENT_INT(0));
 112                          FAILED ("DISCRIMINANT OF CONSTRAINED ACTUAL " &
 113                                  "PARAMETER ILLEGALLY CHANGED - 2");
 114                     EXCEPTION
 115                          WHEN CONSTRAINT_ERROR => NULL;
 116                          WHEN OTHERS =>
 117                               FAILED ("WRONG EXCEPTION - 2");
 118                     END;
 119                END IF;
 120           END PROC;
 121      BEGIN
 122           IF U1.DISC /= IDENT_INT(3) THEN
 123                FAILED ("INITIAL DISCRIMINANT VALUE WRONG - U1");
 124           END IF;
 125
 126           U1 := (DISC => IDENT_INT(5));
 127           IF U1.DISC /= 5 THEN
 128                FAILED ("ASSIGNMENT FAILED FOR OBJECT");
 129           END IF;
 130
 131           IF R.COMP.DISC /= IDENT_INT(7) THEN
 132                FAILED ("DEFAULT DISCRIMINANT VALUE WRONG - R");
 133           END IF;
 134
 135           R.COMP := (DISC => IDENT_INT(5));
 136           IF R.COMP.DISC /= 5 THEN
 137                FAILED ("ASSIGNMENT FAILED FOR RECORD COMPONENT");
 138           END IF;
 139
 140           FOR I IN 1..10 LOOP
 141                IF ARR(I).DISC /= IDENT_INT(7) THEN
 142                     FAILED ("DEFAULT DISCRIMINANT VALUE WRONG - ARR");
 143                END IF;
 144           END LOOP;
 145
 146           ARR(3) := (DISC => IDENT_INT(5));
 147           IF ARR(3).DISC /= 5 THEN
 148                FAILED ("ASSIGNMENT FAILED FOR ARRAY COMPONENT");
 149           END IF;
 150
 151           IF ARR /= (1..2|4..10 => (DISC => 7), 3 => (DISC => 5)) THEN
 152                FAILED ("MODIFIED WRONG COMPONENTS");
 153           END IF;
 154
 155           PROC(C1,C2,C3,IDENT_BOOL(TRUE));
 156           PROC(U1,U2,U3,IDENT_BOOL(FALSE));
 157           IF U2.DISC /= 0 OR U3.DISC /= 0 THEN
 158                FAILED ("ASSIGNMENT TO UNCONSTRAINED ACTUAL PARAMETER " &
 159                        "FAILED TO CHANGE DISCRIMINANT");
 160           END IF;
 161
 162           PROC(ARR(1), ARR(3), ARR(4), FALSE);
 163           IF ARR(3).DISC /= 0 OR ARR(4).DISC /= 0 THEN
 164                FAILED ("ARRAY COMPONENT ASSIGNMENTS DIDN'T CHANGE " &
 165                        "DISCRIMINANT OF COMPONENT");
 166           END IF;
 167
 168           PROC (ARR2(2), ARR2(5), ARR2(10), TRUE);
 169      END;
 170
 171      RESULT;
 172 END C37208A;