old-autovect-branch/gcc/testsuite/ada/acats/tests/c8/c87b28a.ada

   1 -- C87B28A.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 OVERLOADING RESOLUTION USES THE RULE THAT:
  26 --
  27 -- THE TYPE OF THE LITERAL "NULL" MUST BE DETERMINED FROM THE FACT
  28 -- THAT "NULL" IS A VALUE OF AN ACCESS TYPE.
  29
  30 -- TRH  13 AUG 82
  31 -- JRK 2/2/84
  32
  33 WITH REPORT; USE REPORT;
  34
  35 PROCEDURE C87B28A IS
  36
  37      ERR : BOOLEAN := FALSE;
  38
  39      TYPE A2 IS ACCESS BOOLEAN;
  40      TYPE A3 IS ACCESS INTEGER;
  41      TYPE A1 IS ACCESS A2;
  42
  43      FUNCTION F RETURN A1 IS
  44      BEGIN
  45           RETURN NEW A2;
  46      END F;
  47
  48      FUNCTION F RETURN A2 IS
  49      BEGIN
  50           ERR := TRUE;
  51           RETURN NEW BOOLEAN;
  52      END F;
  53
  54      FUNCTION F RETURN A3 IS
  55      BEGIN
  56           ERR := TRUE;
  57           RETURN (NEW INTEGER);
  58      END F;
  59
  60 BEGIN
  61      TEST ("C87B28A", "OVERLOADING OF THE ACCESS TYPE LITERAL 'NULL'");
  62
  63      F.ALL := NULL;
  64
  65      IF ERR THEN
  66           FAILED ("RESOLUTION INCORRECT FOR THE ACCESS TYPE LITERAL " &
  67                   "'NULL'");
  68      END IF;
  69
  70      RESULT;
  71 END C87B28A;