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-- CD30006.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 ACAA 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.
--
-- Notice
--
-- The ACAA has created and maintains the Ada Conformity Assessment Test
-- Suite for the purpose of conformity assessments conducted in accordance
-- with the International Standard ISO/IEC 18009 - Ada: Conformity
-- assessment of a language processor. This test suite should not be used
-- to make claims of conformance unless used in accordance with
-- ISO/IEC 18009 and any applicable ACAA procedures.
--*
--
-- OBJECTIVE:
-- Check that the implementation supports specifying Alignments for
-- subtypes and objects using aspect specifications.
--
-- TEST DESCRIPTION:
-- This test is similar to CD30002, using aspect notation rather than
-- attribute definition clauses. We make the same requirements as in
-- that test.
--
-- The test tries using constants declared after the aspect
-- specifications as the aspects are not supposed to be evaluated
-- until the freezing point of the entities. Note that in this
-- case, there is no need for declaring these constants later,
-- but in real programs this feature can be critical.
--
-- The test defines several types and objects, specifying various
-- alignments for them (as factors and multiples of the number of
-- storage elements per word). It then checks the alignments by
-- declaring some objects, and checking that the integer values of
-- their addresses is mod the specified alignment. This will not
-- prevent false passes where the lucky compiler gets it right by
-- chance, but will catch compilers that specifically do not obey
-- the alignment clauses.
--
-- Note that we assign this test to 13.3 (where the Alignment attribute
-- is defined) rather than 13.1.1(31/3) which states that we can specify
-- representation attributes this way. Since 13.1.1(31/3) is a blanket
-- applying to a large number of attributes, it is less interesting
-- than the details of the aspect itself.
--
-- APPLICABILITY CRITERIA:
-- All implementations must attempt to compile this test.
--
-- For implementations validating against Systems Programming Annex (C):
-- this test must execute and report PASSED.
--
-- For implementations not validating against Annex C:
-- this test may report compile time errors at one or more points
-- indicated by "-- ANX-C RQMT", in which case it may be graded as inapplicable.
-- Otherwise, the test must execute and report PASSED.
--
--
-- CHANGE HISTORY:
-- 27 Sep 13 RLB Created test from CD30002.
-- 16 Oct 13 RLB Corrected message.
-- 20 Mar 14 RLB Readied to issue; minor changes to comments.
-- 13 Mar 15 RLB Eliminated overlong lines and tab characters.
--!
----------------------------------------------------------------- CD30006_0
with Impdef;
with System.Storage_Elements;
package CD30006_0 is
S_Units_per_Word : constant := System.Word_Size/System.Storage_Unit;
-- Must be 1 or greater.
subtype Storage_Element is System.Storage_Elements.Storage_Element;
type Some_Stuff is array(1..S_Units_Per_Word) of Storage_Element
with Alignment => Impdef.Max_Default_Alignment; -- ANX-C RQMT.
Library_Level_Object : Some_Stuff
with Alignment => Impdef.Max_Linker_Alignment; -- ANX-C RQMT.
type Quarter is mod 4 -- two bits
with Alignment => Small_Alignment; -- ANX-C RQMT.
type Half is mod 16 -- nibble
with Alignment => Multiple_Type_Alignment; -- ANX-C RQMT.
Multiple_Type_Alignment : constant :=
Integer'Min ( Impdef.Max_Default_Alignment,
2 * S_Units_per_Word );
-- Calculate a reasonable alignment, but not larger than the
-- implementation is required to support.
Small_Alignment : constant :=
Integer'Max ( S_Units_per_Word / 2, 1);
-- Calculate a reasonable small alignment, but not less than 1.
-- (If S_Units_per_Word = 1, 1/2 => 0 which causes problems
-- verifying alignment.)
type O_Some_Stuff is array(1..S_Units_Per_Word) of Storage_Element;
type O_Quarter is mod 4; -- two bits
type O_Half is mod 16; -- nibble
Delay_Object : O_Half
with Alignment => Multiple_Object_Alignment; -- ANX-C RQMT.
Multiple_Object_Alignment : constant :=
Integer'Min ( Impdef.Max_Linker_Alignment,
2 * S_Units_per_Word );
-- Calculate a reasonable object alignment, but not larger than
-- the implementation is required to support.
end CD30006_0;
-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
-- there is no package body CD30006_0
------------------------------------------------------------------- CD30006
with Report;
with Impdef;
with CD30006_0;
with System.Storage_Elements;
procedure CD30006 is
My_Stuff : CD30006_0.Some_Stuff;
-- Impdef.Max_Default_Alignment
My_Quarter : CD30006_0.Quarter;
-- CD30006_0.S_Units_per_Word / 2
My_Half : CD30006_0.Half;
-- CD30006_0.S_Units_per_Word * 2
Stuff_Object : CD30006_0.O_Some_Stuff
with Alignment => Impdef.Max_Default_Alignment; -- ANX-C RQMT.
Quarter_Object : CD30006_0.O_Quarter
with Alignment => CD30006_0.Small_Alignment; -- ANX-C RQMT.
Half_Object : CD30006_0.O_Half
with Alignment => CD30006_0.Multiple_Object_Alignment; -- ANX-C RQMT.
subtype IntAdd is System.Storage_Elements.Integer_Address;
use type System.Storage_Elements.Integer_Address;
function A2I(Value: System.Address) return IntAdd renames
System.Storage_Elements.To_Integer;
NAC : constant String := " not aligned correctly";
begin -- Main test procedure.
Report.Test ("CD30006", "Check that the implementation supports " &
"specifying Alignments for subtypes and objects " &
"using aspect notation");
if A2I(CD30006_0.Library_Level_Object'Address)
mod Impdef.Max_Linker_Alignment /= 0 then
Report.Failed("Library_Level_Object" & NAC);
end if;
if A2I(CD30006_0.Delay_Object'Address)
mod (CD30006_0.Multiple_Object_Alignment) /= 0 then
Report.Failed("Delayed multiple of words object" & NAC);
end if;
if A2I(My_Stuff'Address) mod Impdef.Max_Default_Alignment /= 0 then
Report.Failed("Max alignment subtype" & NAC);
end if;
if A2I(My_Quarter'Address) mod (CD30006_0.Small_Alignment) /= 0 then
Report.Failed("Factor of words subtype" & NAC);
end if;
if A2I(My_Half'Address) mod (CD30006_0.Multiple_Type_Alignment) /= 0 then
Report.Failed("Multiple of words subtype" & NAC);
end if;
if A2I(Stuff_Object'Address) mod Impdef.Max_Default_Alignment /= 0 then
Report.Failed("Stuff alignment object" & NAC);
end if;
if A2I(Quarter_Object'Address)
mod (CD30006_0.Small_Alignment) /= 0 then
Report.Failed("Factor of words object" & NAC);
end if;
if A2I(Half_Object'Address) mod (CD30006_0.Multiple_Object_Alignment)
/= 0 then
Report.Failed("Multiple of words object" & NAC);
end if;
Report.Result;
end CD30006;
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