gcc/testsuite/ada/acats/tests/c4/c41205a.ada

   1 -- C41205A.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 -- CHECK THAT CONSTRAINT_ERROR IS RAISED IF THE NAME PART OF A
  26 --   SLICE DENOTES AN ACCESS OBJECT WHOSE VALUE IS NULL, AND
  27 --   ALSO IF THE NAME IS A FUNCTION CALL DELIVERING NULL.
  28
  29 -- WKB 8/6/81
  30 -- SPS 10/26/82
  31 -- EDS 07/14/98    AVOID OPTIMIZATION
  32
  33 WITH REPORT;
  34 USE REPORT;
  35 PROCEDURE C41205A IS
  36
  37 BEGIN
  38      TEST ("C41205A", "CONSTRAINT_ERROR WHEN THE NAME PART OF A " &
  39                       "SLICE DENOTES A NULL ACCESS OBJECT OR A " &
  40                       "FUNCTION CALL DELIVERING NULL");
  41
  42      DECLARE
  43
  44           TYPE T IS ARRAY (INTEGER RANGE <> ) OF INTEGER;
  45           SUBTYPE T1 IS T (1..5);
  46           TYPE A1 IS ACCESS T1;
  47           B : A1 := NEW T1' (1,2,3,4,5);
  48           I : T (2..3);
  49
  50      BEGIN
  51
  52           IF EQUAL (3,3) THEN
  53                B := NULL;
  54           END IF;
  55
  56           I := B(2..3);
  57           FAILED ("CONSTRAINT_ERROR NOT RAISED - 1 " & INTEGER'IMAGE(I(2)));
  58
  59      EXCEPTION
  60
  61           WHEN CONSTRAINT_ERROR => NULL;
  62           WHEN OTHERS           => FAILED ("WRONG EXCEPTION - 1");
  63
  64      END;
  65
  66      DECLARE
  67
  68           TYPE T IS ARRAY (INTEGER RANGE <> ) OF INTEGER;
  69           SUBTYPE T2 IS T (1..5);
  70           TYPE A2 IS ACCESS T2;
  71           I : T (2..5);
  72
  73           FUNCTION F RETURN A2 IS
  74           BEGIN
  75                IF EQUAL (3,3) THEN
  76                     RETURN NULL;
  77                END IF;
  78                RETURN NEW T2' (1,2,3,4,5);
  79           END F;
  80
  81      BEGIN
  82
  83           I := F(2..5);
  84           FAILED ("CONSTRAINT_ERROR NOT RAISED - 2 " & INTEGER'IMAGE(I(2)));
  85
  86      EXCEPTION
  87
  88           WHEN CONSTRAINT_ERROR => NULL;
  89           WHEN OTHERS           => FAILED ("WRONG EXCEPTION - 2");
  90
  91      END;
  92
  93      RESULT;
  94 END C41205A;