diff options
Diffstat (limited to 'gcc-4.9/gcc/testsuite/ada/acats/tests/cd/cd72a01.a')
| -rw-r--r-- | gcc-4.9/gcc/testsuite/ada/acats/tests/cd/cd72a01.a | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/ada/acats/tests/cd/cd72a01.a b/gcc-4.9/gcc/testsuite/ada/acats/tests/cd/cd72a01.a new file mode 100644 index 000000000..9c98cb0c6 --- /dev/null +++ b/gcc-4.9/gcc/testsuite/ada/acats/tests/cd/cd72a01.a @@ -0,0 +1,165 @@ +-- +-- CD72A01.A +-- +-- Grant of Unlimited Rights +-- +-- Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687, +-- F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained +-- unlimited rights in the software and documentation contained herein. +-- Unlimited rights are defined in DFAR 252.227-7013(a)(19). By making +-- this public release, the Government intends to confer upon all +-- recipients unlimited rights equal to those held by the Government. +-- 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 the package System.Address_To_Access_Conversions may be +-- instantiated for various simple types. +-- +-- Check that To_Pointer and To_Address are inverse operations. +-- +-- Check that To_Pointer(X'Address) equals X'Unchecked_Access for an +-- X that allows Unchecked_Access. +-- +-- Check that To_Pointer(Null_Address) returns null. +-- +-- TEST DESCRIPTION: +-- This test checks that the semantics provided in +-- Address_To_Access_Conversions are present and operate +-- within expectations (to the best extent possible in a portable +-- implementation independent fashion). +-- +-- The functions Address_To_Hex and Hex_To_Address test the invertability +-- of the To_Integer and To_Address functions, along with a great deal +-- of optimizer chaff and protection from the fact that type +-- Storage_Elements.Integer_Address may be either a modular or a signed +-- integer type. +-- +-- This test has some interesting usage paradigms in that users +-- occasionally want to store address information in a transportable +-- fashion, and often resort to some textual representation of values. +-- +-- 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: +-- 13 JUL 95 SAIC Initial version (CD72001) +-- 08 FEB 96 SAIC Revised (split) version for 2.1 +-- 07 MAY 96 SAIC Additional subtest added for 2.1 +-- 16 FEB 98 EDS Modified documentation. +--! + +with Report; +with Impdef; +with FD72A00; +with System.Storage_Elements; +with System.Address_To_Access_Conversions; +procedure CD72A01 is + use System; + use FD72A00; + + package Number_ATAC is + new System.Address_To_Access_Conversions(Number); -- ANX-C RQMT + + use type Number_ATAC.Object_Pointer; + + type Data is record + One, Two: aliased Number; + end record; + + package Data_ATAC is + new System.Address_To_Access_Conversions(Data); -- ANX-C RQMT + + use type Data_ATAC.Object_Pointer; + + type Test_Cases is ( Addr_Type, Record_Type ); + + type Naive_Dynamic_String is access String; + + type String_Store is array(Test_Cases) of Naive_Dynamic_String; + + The_Strings : String_Store; + + -- create several aliased objects with distinct values + + My_Number : aliased Number := Number'First; + My_Data : aliased Data := (Number'First,Number'Last); + + use type System.Storage_Elements.Integer_Address; + +begin -- Main test procedure. + + Report.Test ("CD72A01", "Check package " & + "System.Address_To_Access_Conversions " & + "for simple types" ); + + -- take several pointer objects, convert them to addresses, and store + -- the address as a hexadecimal representation for later reconversion + + The_Strings(Addr_Type) := new String'( + Address_To_Hex(Number_ATAC.To_Address(My_Number'Access)) ); + + The_Strings(Record_Type) := new String'( + Address_To_Hex(Data_ATAC.To_Address(My_Data'Access)) ); + + -- now, reconvert the hexadecimal address values back to pointers, + -- and check that the dereferenced pointer still designates the + -- value placed at that location. The use of the intermediate + -- string representation should foil even the cleverest of optimizers + + if Number_ATAC.To_Pointer( + Hex_To_Address(The_Strings(Addr_Type))).all + /= Number'First then + Report.Failed("Number reconversion"); + end if; + + if Data_ATAC.To_Pointer(Hex_To_Address(The_Strings(Record_Type))).all + /= (Number'First,Number'Last) then + Report.Failed("Data reconversion"); + end if; + + -- check that the resulting values are equal to the 'Unchecked_Access + -- of the value + + if Number_ATAC.To_Pointer( + Hex_To_Address(The_Strings(Addr_Type))) + /= My_Number'Unchecked_Access then + Report.Failed("Number Unchecked_Access"); + end if; + + if Data_ATAC.To_Pointer(Hex_To_Address(The_Strings(Record_Type))) + /= My_Data'Unchecked_Access then + Report.Failed("Data Unchecked_Access"); + end if; + + if Number_ATAC.To_Pointer(System.Null_Address) /= null then + Report.Failed("To_Pointer(Null_Address) /= null"); + end if; + + if Number_ATAC.To_Address(null) /= System.Null_Address then + Report.Failed("To_Address(null) /= Null_Address"); + end if; + + Report.Result; + +end CD72A01; |