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|
-- C761011.A
--
-- Grant of Unlimited Rights
--
-- The Ada Conformity Assessment Authority (ACAA) holds unlimited
-- rights in the software and documentation contained herein. Unlimited
-- rights are the same as those granted by the U.S. Government for older
-- parts of the Ada Conformity Assessment Test Suite, and are defined
-- in DFAR 252.227-7013(a)(19). By making this public release, the ACAA
-- intends to confer upon all recipients unlimited rights equal to those
-- held by the ACAA. These rights include rights to use, duplicate,
-- release or disclose the released technical data and computer software
-- in whole or in part, in any manner and for any purpose whatsoever, and
-- to have or permit others to do so.
--
-- DISCLAIMER
--
-- ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR
-- DISCLOSED ARE AS IS. THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED
-- WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE
-- SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE
-- OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A
-- PARTICULAR PURPOSE OF SAID MATERIAL.
--*
--
-- OBJECTIVE:
-- Check that if a Finalize propagates an exception, other Finalizes due
-- to be performed are performed.
-- Case 1: A Finalize invoked due to the end of execution of
-- a master. (Defect Report 8652/0023, as reflected in Technical
-- Corrigendum 1).
-- Case 2: A Finalize invoked due to finalization of an anonymous
-- object. (Defect Report 8652/0023, as reflected in Technical
-- Corrigendum 1).
-- Case 3: A Finalize invoked due to the transfer of control
-- due to an exit statement.
-- Case 4: A Finalize invoked due to the transfer of control
-- due to a goto statement.
-- Case 5: A Finalize invoked due to the transfer of control
-- due to a return statement.
-- Case 6: A Finalize invoked due to the transfer of control
-- due to raises an exception.
--
--
-- CHANGE HISTORY:
-- 29 JAN 2001 PHL Initial version
-- 15 MAR 2001 RLB Readied for release; added optimization blockers.
-- Added test cases for paragraphs 18 and 19 of the
-- standard (the previous tests were withdrawn).
--
--!
with Ada.Finalization;
use Ada.Finalization;
package C761011_0 is
type Ctrl (D : Boolean) is new Ada.Finalization.Controlled with
record
Finalized : Boolean := False;
case D is
when False =>
C1 : Integer;
when True =>
C2 : Float;
end case;
end record;
function Create (Id : Integer) return Ctrl;
procedure Finalize (Obj : in out Ctrl);
function Was_Finalized (Id : Integer) return Boolean;
procedure Use_It (Obj : in Ctrl);
-- Use Obj to prevent optimization.
end C761011_0;
with Report;
use Report;
package body C761011_0 is
User_Error : exception;
Finalize_Called : array (0 .. 50) of Boolean := (others => False);
function Create (Id : Integer) return Ctrl is
Obj : Ctrl (Boolean'Val (Id mod Ident_Int (2)));
begin
case Obj.D is
when False =>
Obj.C1 := Ident_Int (Id);
when True =>
Obj.C2 := Float (Ident_Int (Id + Ident_Int (Id)));
end case;
return Obj;
end Create;
procedure Finalize (Obj : in out Ctrl) is
begin
if not Obj.Finalized then
Obj.Finalized := True;
if Obj.D then
if Integer (Obj.C2 / 2.0) mod Ident_Int (10) =
Ident_Int (3) then
raise User_Error;
else
Finalize_Called (Integer (Obj.C2) / 2) := True;
end if;
else
if Obj.C1 mod Ident_Int (10) = Ident_Int (0) then
raise Tasking_Error;
else
Finalize_Called (Obj.C1) := True;
end if;
end if;
end if;
end Finalize;
function Was_Finalized (Id : Integer) return Boolean is
begin
return Finalize_Called (Ident_Int (Id));
end Was_Finalized;
procedure Use_It (Obj : in Ctrl) is
-- Use Obj to prevent optimization.
begin
case Obj.D is
when True =>
if not Equal (Boolean'Pos(Obj.Finalized),
Boolean'Pos(Obj.Finalized)) then
Failed ("Identity check - 1");
end if;
when False =>
if not Equal (Obj.C1, Obj.C1) then
Failed ("Identity check - 2");
end if;
end case;
end Use_It;
end C761011_0;
with Ada.Exceptions;
use Ada.Exceptions;
with Ada.Finalization;
with C761011_0;
use C761011_0;
with Report;
use Report;
procedure C761011 is
begin
Test
("C761011",
" Check that if a finalize propagates an exception, other finalizes " &
"due to be performed are performed");
Normal: -- Case 1
begin
declare
Obj1 : Ctrl := Create (Ident_Int (1));
Obj2 : constant Ctrl := (Ada.Finalization.Controlled with
D => False,
Finalized => Ident_Bool (False),
C1 => Ident_Int (2));
Obj3 : Ctrl :=
(Ada.Finalization.Controlled with
D => True,
Finalized => Ident_Bool (False),
C2 => 2.0 * Float (Ident_Int
(3))); -- Finalization: User_Error
Obj4 : Ctrl := Create (Ident_Int (4));
begin
Comment ("Finalization of normal object");
Use_It (Obj1); -- Prevent optimization of Objects.
Use_It (Obj2); -- (Critical if AI-147 is adopted.)
Use_It (Obj3);
Use_It (Obj4);
end;
Failed ("No exception raised by finalization of normal object");
exception
when Program_Error =>
if not Was_Finalized (Ident_Int (1)) or
not Was_Finalized (Ident_Int (2)) or
not Was_Finalized (Ident_Int (4)) then
Failed ("Missing finalizations - 1");
end if;
when E: others =>
Failed ("Exception " & Exception_Name (E) &
" raised - " & Exception_Message (E) & " - 1");
end Normal;
Anon: -- Case 2
begin
declare
Obj1 : Ctrl := (Ada.Finalization.Controlled with
D => True,
Finalized => Ident_Bool (False),
C2 => 2.0 * Float (Ident_Int (5)));
Obj2 : constant Ctrl := (Ada.Finalization.Controlled with
D => False,
Finalized => Ident_Bool (False),
C1 => Ident_Int (6));
Obj3 : Ctrl := (Ada.Finalization.Controlled with
D => True,
Finalized => Ident_Bool (False),
C2 => 2.0 * Float (Ident_Int (7)));
Obj4 : Ctrl := Create (Ident_Int (8));
begin
Comment ("Finalization of anonymous object");
-- The finalization of the anonymous object below will raise
-- Tasking_Error.
if Create (Ident_Int (10)).C1 /= Ident_Int (10) then
Failed ("Incorrect construction of an anonymous object");
end if;
Failed ("Anonymous object not finalized at the end of the " &
"enclosing statement");
Use_It (Obj1); -- Prevent optimization of Objects.
Use_It (Obj2); -- (Critical if AI-147 is adopted.)
Use_It (Obj3);
Use_It (Obj4);
end;
Failed ("No exception raised by finalization of an anonymous " &
"object of a function");
exception
when Program_Error =>
if not Was_Finalized (Ident_Int (5)) or
not Was_Finalized (Ident_Int (6)) or
not Was_Finalized (Ident_Int (7)) or
not Was_Finalized (Ident_Int (8)) then
Failed ("Missing finalizations - 2");
end if;
when E: others =>
Failed ("Exception " & Exception_Name (E) &
" raised - " & Exception_Message (E) & " - 2");
end Anon;
An_Exit: -- Case 3
begin
for Counter in 1 .. 4 loop
declare
Obj1 : Ctrl := Create (Ident_Int (11));
Obj2 : constant Ctrl := (Ada.Finalization.Controlled with
D => False,
Finalized => Ident_Bool (False),
C1 => Ident_Int (12));
Obj3 : Ctrl :=
(Ada.Finalization.Controlled with
D => True,
Finalized => Ident_Bool (False),
C2 => 2.0 * Float (
Ident_Int(13))); -- Finalization: User_Error
Obj4 : Ctrl := Create (Ident_Int (14));
begin
Comment ("Finalization because of exit of loop");
Use_It (Obj1); -- Prevent optimization of Objects.
Use_It (Obj2); -- (Critical if AI-147 is adopted.)
Use_It (Obj3);
Use_It (Obj4);
exit when not Ident_Bool (Obj2.D);
Failed ("Exit not taken");
end;
end loop;
Failed ("No exception raised by finalization on exit");
exception
when Program_Error =>
if not Was_Finalized (Ident_Int (11)) or
not Was_Finalized (Ident_Int (12)) or
not Was_Finalized (Ident_Int (14)) then
Failed ("Missing finalizations - 3");
end if;
when E: others =>
Failed ("Exception " & Exception_Name (E) &
" raised - " & Exception_Message (E) & " - 3");
end An_Exit;
A_Goto: -- Case 4
begin
declare
Obj1 : Ctrl := Create (Ident_Int (15));
Obj2 : constant Ctrl := (Ada.Finalization.Controlled with
D => False,
Finalized => Ident_Bool (False),
C1 => Ident_Int (0));
-- Finalization: Tasking_Error
Obj3 : Ctrl := Create (Ident_Int (16));
Obj4 : Ctrl := (Ada.Finalization.Controlled with
D => True,
Finalized => Ident_Bool (False),
C2 => 2.0 * Float (Ident_Int (17)));
begin
Comment ("Finalization because of goto statement");
Use_It (Obj1); -- Prevent optimization of Objects.
Use_It (Obj2); -- (Critical if AI-147 is adopted.)
Use_It (Obj3);
Use_It (Obj4);
if Ident_Bool (Obj4.D) then
goto Continue;
end if;
Failed ("Goto not taken");
end;
<<Continue>>
Failed ("No exception raised by finalization on goto");
exception
when Program_Error =>
if not Was_Finalized (Ident_Int (15)) or
not Was_Finalized (Ident_Int (16)) or
not Was_Finalized (Ident_Int (17)) then
Failed ("Missing finalizations - 4");
end if;
when E: others =>
Failed ("Exception " & Exception_Name (E) &
" raised - " & Exception_Message (E) & " - 4");
end A_Goto;
A_Return: -- Case 5
declare
procedure Do_Something is
Obj1 : Ctrl := Create (Ident_Int (18));
Obj2 : Ctrl := (Ada.Finalization.Controlled with
D => True,
Finalized => Ident_Bool (False),
C2 => 2.0 * Float (Ident_Int (19)));
Obj3 : constant Ctrl := (Ada.Finalization.Controlled with
D => False,
Finalized => Ident_Bool (False),
C1 => Ident_Int (20));
-- Finalization: Tasking_Error
begin
Comment ("Finalization because of return statement");
Use_It (Obj1); -- Prevent optimization of Objects.
Use_It (Obj2); -- (Critical if AI-147 is adopted.)
Use_It (Obj3);
if not Ident_Bool (Obj3.D) then
return;
end if;
Failed ("Return not taken");
end Do_Something;
begin
Do_Something;
Failed ("No exception raised by finalization on return statement");
exception
when Program_Error =>
if not Was_Finalized (Ident_Int (18)) or
not Was_Finalized (Ident_Int (19)) then
Failed ("Missing finalizations - 5");
end if;
when E: others =>
Failed ("Exception " & Exception_Name (E) &
" raised - " & Exception_Message (E) & " - 5");
end A_Return;
Except: -- Case 6
declare
Funky_Error : exception;
procedure Do_Something is
Obj1 : Ctrl :=
(Ada.Finalization.Controlled with
D => True,
Finalized => Ident_Bool (False),
C2 => 2.0 * Float (
Ident_Int(23))); -- Finalization: User_Error
Obj2 : Ctrl := Create (Ident_Int (24));
Obj3 : Ctrl := Create (Ident_Int (25));
Obj4 : constant Ctrl := (Ada.Finalization.Controlled with
D => False,
Finalized => Ident_Bool (False),
C1 => Ident_Int (26));
begin
Comment ("Finalization because of exception propagation");
Use_It (Obj1); -- Prevent optimization of Objects.
Use_It (Obj2); -- (Critical if AI-147 is adopted.)
Use_It (Obj3);
Use_It (Obj4);
if not Ident_Bool (Obj4.D) then
raise Funky_Error;
end if;
Failed ("Exception not raised");
end Do_Something;
begin
Do_Something;
Failed ("No exception raised by finalization on exception " &
"propagation");
exception
when Program_Error =>
if not Was_Finalized (Ident_Int (24)) or
not Was_Finalized (Ident_Int (25)) or
not Was_Finalized (Ident_Int (26)) then
Failed ("Missing finalizations - 6");
end if;
when Funky_Error =>
Failed ("Wrong exception propagated");
-- Should be Program_Error (7.6.1(19)).
when E: others =>
Failed ("Exception " & Exception_Name (E) &
" raised - " & Exception_Message (E) & " - 6");
end Except;
Result;
end C761011;
|
