gcc/testsuite/ada/acats/tests/c4/c41304b.ada

   1 -- C41304B.ADA
   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 -- OBJECTIVE:
  26 --      CHECK THAT L.R RAISES CONSTRAINT_ERROR WHEN:
  27 --        L DENOTES A RECORD OBJECT SUCH THAT, FOR THE EXISTING
  28 --           DISCRIMINANT VALUES, THE COMPONENT DENOTED BY R DOES
  29 --           NOT EXIST.
  30 --        L IS A FUNCTION CALL DELIVERING A RECORD VALUE SUCH THAT,
  31 --           FOR THE EXISTING DISCRIMINANT VALUES, THE COMPONENT
  32 --           DENOTED BY R DOES NOT EXIST.
  33 --        L IS AN ACCESS OBJECT AND THE OBJECT DESIGNATED BY THE ACCESS
  34 --           VALUE IS SUCH THAT COMPONENT R DOES NOT EXIST FOR THE
  35 --           OBJECT'S CURRENT DISCRIMINANT VALUES.
  36 --        L IS A FUNCTION CALL RETURNING AN ACCESS VALUE AND THE OBJECT
  37 --           DESIGNATED BY THE ACCESS VALUE IS SUCH THAT COMPONENT R
  38 --           DOES NOT EXIST FOR THE OBJECT'S CURRENT DISCRIMINANT
  39 --           VALUES.
  40
  41 -- HISTORY:
  42 --     TBN 05/23/86  CREATED ORIGINAL TEST.
  43 --     JET 01/08/88  MODIFIED HEADER FORMAT AND ADDED CODE TO
  44 --                   PREVENT OPTIMIZATION.
  45
  46 WITH REPORT; USE REPORT;
  47 PROCEDURE C41304B IS
  48
  49      TYPE V (DISC : INTEGER := 0) IS
  50           RECORD
  51                CASE DISC IS
  52                     WHEN 1 =>
  53                          X : INTEGER;
  54                     WHEN OTHERS =>
  55                          Y : INTEGER;
  56                END CASE;
  57           END RECORD;
  58
  59      TYPE T IS ACCESS V;
  60
  61 BEGIN
  62      TEST ("C41304B", "CHECK THAT L.R RAISES CONSTRAINT_ERROR WHEN " &
  63                       "THE COMPONENT DENOTED BY R DOES NOT EXIST");
  64
  65      DECLARE
  66
  67           VR : V := (DISC => 0, Y => 4);
  68           J : INTEGER;
  69
  70      BEGIN
  71
  72           IF EQUAL (4, 4) THEN
  73                VR := (DISC => 1, X => 3);
  74           END IF;
  75
  76           J := VR.Y;
  77           FAILED ("CONSTRAINT_ERROR NOT RAISED FOR A RECORD OBJECT");
  78
  79           -- IF STATEMENT PREVENTS OPTIMIZING OF VARIABLE J.
  80
  81           IF EQUAL (J,3) THEN
  82                FAILED ("CONSTRAINT_ERROR NOT RAISED - 1");
  83           END IF;
  84
  85      EXCEPTION
  86
  87           WHEN CONSTRAINT_ERROR =>
  88                NULL;
  89           WHEN OTHERS =>
  90                FAILED ("WRONG EXCEPTION RAISED FOR A RECORD OBJECT");
  91
  92      END;
  93
  94      --------------------------------------------------
  95
  96      DECLARE
  97
  98           J : INTEGER;
  99
 100           FUNCTION F RETURN V IS
 101           BEGIN
 102                IF EQUAL (4, 4) THEN
 103                     RETURN (DISC => 2, Y => 3);
 104                END IF;
 105                RETURN (DISC => 1, X => 4);
 106           END F;
 107
 108      BEGIN
 109
 110           J := F.X;
 111           FAILED ("CONSTRAINT_ERROR NOT RAISED FOR A FUNCTION CALL " &
 112                   "DELIVERING A RECORD VALUE");
 113
 114           -- IF STATEMENT PREVENTS OPTIMIZING OF VARIABLE J.
 115
 116           IF EQUAL (J,3) THEN
 117                FAILED ("CONSTRAINT_ERROR NOT RAISED - 2");
 118           END IF;
 119
 120      EXCEPTION
 121
 122           WHEN CONSTRAINT_ERROR =>
 123                NULL;
 124           WHEN OTHERS =>
 125                FAILED ("WRONG EXCEPTION RAISED FOR A FUNCTION CALL " &
 126                        "DELIVERING A RECORD VALUE");
 127
 128      END;
 129
 130      --------------------------------------------------
 131
 132      DECLARE
 133
 134           A : T := NEW V' (DISC => 0, Y => 4);
 135           J : INTEGER;
 136
 137      BEGIN
 138
 139           IF EQUAL (4, 4) THEN
 140                A := NEW V' (DISC => 1, X => 3);
 141           END IF;
 142
 143           J := A.Y;
 144           FAILED ("CONSTRAINT_ERROR NOT RAISED FOR AN ACCESS OBJECT");
 145
 146           -- IF STATEMENT PREVENTS OPTIMIZING OF VARIABLE J.
 147
 148           IF EQUAL (J,3) THEN
 149                FAILED ("CONSTRAINT_ERROR NOT RAISED - 3");
 150           END IF;
 151
 152      EXCEPTION
 153
 154           WHEN CONSTRAINT_ERROR =>
 155                NULL;
 156           WHEN OTHERS =>
 157                FAILED ("WRONG EXCEPTION RAISED FOR AN ACCESS OBJECT");
 158
 159      END;
 160
 161      --------------------------------------------------
 162
 163      DECLARE
 164
 165           J : INTEGER;
 166
 167           FUNCTION F RETURN T IS
 168           BEGIN
 169                IF EQUAL (4, 4) THEN
 170                     RETURN NEW V' (DISC => 2, Y => 3);
 171                END IF;
 172                RETURN NEW V' (DISC => 1, X => 4);
 173           END F;
 174
 175      BEGIN
 176
 177           J := F.X;
 178           FAILED ("CONSTRAINT_ERROR NOT RAISED FOR A FUNCTION CALL " &
 179                   "DELIVERING AN ACCESS VALUE");
 180
 181           -- IF STATEMENT PREVENTS OPTIMIZING OF VARIABLE J.
 182
 183           IF EQUAL (J,3) THEN
 184                FAILED ("CONSTRAINT_ERROR NOT RAISED - 4");
 185           END IF;
 186
 187      EXCEPTION
 188
 189           WHEN CONSTRAINT_ERROR =>
 190                NULL;
 191           WHEN OTHERS =>
 192                FAILED ("WRONG EXCEPTION RAISED FOR A FUNCTION CALL " &
 193                        "DELIVERING AN ACCESS VALUE");
 194
 195      END;
 196
 197      RESULT;
 198 END C41304B;