gcc/testsuite/ada/acats/tests/c9/c95095b.ada

   1 -- C95095B.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 OVERLOADED ENTRY DECLARATIONS
  26 -- ARE PERMITTED IN WHICH THERE IS A MINIMAL
  27 -- DIFFERENCE BETWEEN THE DECLARATIONS.
  28
  29 --     (B) ONE ENTRY HAS ONE LESS PARAMETER THAN THE OTHER.
  30
  31 -- JWC 7/24/85
  32 -- JRK 10/2/85
  33
  34 WITH REPORT; USE REPORT;
  35 PROCEDURE C95095B IS
  36
  37 BEGIN
  38      TEST ("C95095B", "ENTRY OVERLOADING WITH " &
  39                       "MINIMAL DIFFERENCES");
  40
  41      --------------------------------------------------
  42
  43      -- ONE ENTRY HAS ONE MORE PARAMETER
  44      -- THAN THE OTHER.  THIS IS TESTED IN THE
  45      -- CASE IN WHICH THAT PARAMETER HAS A DEFAULT
  46      -- VALUE, AND THE CASE IN WHICH IT DOES NOT.
  47
  48      DECLARE
  49           I, J : INTEGER := 0;
  50           B : BOOLEAN := TRUE;
  51           S : STRING (1..2) := "12";
  52
  53           TASK T IS
  54                ENTRY E1 (I1, I2 : INTEGER; B1 : IN OUT BOOLEAN);
  55                ENTRY E1 (I1, I2 : INTEGER);
  56                ENTRY E2 (B1 : IN OUT BOOLEAN; I1 : INTEGER := 0);
  57                ENTRY E2 (B1 : IN OUT BOOLEAN);
  58           END T;
  59
  60           TASK BODY T IS
  61           BEGIN
  62                LOOP
  63                     SELECT
  64                          ACCEPT E1 (I1, I2 : INTEGER;
  65                                     B1 : IN OUT BOOLEAN) DO
  66                               S (1) := 'A';
  67                          END E1;
  68                     OR
  69                          ACCEPT E1 (I1, I2 : INTEGER) DO
  70                               S (2) := 'B';
  71                          END E1;
  72                     OR
  73                          ACCEPT E2 (B1 : IN OUT BOOLEAN;
  74                                     I1 : INTEGER := 0) DO
  75                               S (1) := 'C';
  76                          END E2;
  77                     OR
  78                          ACCEPT E2 (B1 : IN OUT BOOLEAN) DO
  79                               S (2) := 'D';
  80                          END E2;
  81                     OR
  82                          TERMINATE;
  83                     END SELECT;
  84                END LOOP;
  85           END T;
  86
  87      BEGIN
  88           T.E1 (I, J, B);
  89           T.E1 (I, J);
  90
  91           IF S /= "AB" THEN
  92                FAILED ("ENTRIES DIFFERING ONLY IN " &
  93                        "NUMBER OF PARAMETERS (NO DEFAULTS) " &
  94                        "CAUSED CONFUSION");
  95           END IF;
  96
  97           S := "12";
  98           T.E2 (B, I);
  99           -- NOTE THAT A CALL TO T.E2 WITH ONLY
 100           -- ONE PARAMETER IS AMBIGUOUS.
 101
 102           IF S /= "C2" THEN
 103                FAILED ("ENTRIES DIFFERING ONLY IN " &
 104                        "EXISTENCE OF ONE PARAMETER (WITH " &
 105                        "DEFAULT) CAUSED CONFUSION");
 106           END IF;
 107      END;
 108
 109      --------------------------------------------------
 110
 111      RESULT;
 112 END C95095B;