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-- LA140211.AM

--

--                             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 a compilation unit may not depend semantically

--      on two different versions of the same compilation unit.

--      Check the case where a generic package depends on another

--      generic package that is changed.

--

-- TEST DESCRIPTION:

--      This test compiles a generic package, a second generic

--      package that withs the first and a main procedure that

--      withs the second package.  Then, a new version of the

--      first package is compiled (in a separate file, simulating

--      editing and modification to the unit).  Unless automatic

--      recompilation is supported, this test should fail to link.

--      Otherwise, the test should recompile and link the correct

--      version of the withed function and report "PASSED" at

--      execution time.

--

-- SPECIAL REQUIREMENTS:

--      To build this test:

--         1) Compile the file LA140210 (and include the results in the

--            program library).

--         2) Compile the file LA140211 (and include the results in the

--            program library).

--         3) Compile the file LA140212 (and include the results in the

--            program library).

--         4) Attempt to build an executable image.

--         5) If an executable image results, run it.

--

-- TEST FILES:

--      This test consists of the following files:

--         LA140210.A

--      -> LA140211.AM

--         LA140212.A

--

-- PASS/FAIL CRITERIA:

--      The test passes if a link time error message reports that

--      LA14021_1 is missing or obsolete and no executable image

--      results.  The test also passes if an executable image is produced

--      and reports "PASSED" (in the case where the implementation supports

--      automatic recompilation).

--

-- CHANGE HISTORY:

--     01 MAY 95   ACVC 1.12   LA5008R baseline version

--     23 JUN 95   SAIC        Initial version

--     18 NOV 96   SAIC        Modified unit names and prologue to conform

--                             to coding conventions.

--     07 DEC 96   SAIC        Moved LA14021_0 to a separate file.

--

--!

package LA14021_1 is

     type data_record is tagged

          record

          info : character;

          end record;

     subtype loop_count is integer range 1..100;

     type data_type is new data_record  with

          record

                serial : integer := 0;

          end record;

end LA14021_1;

---------------------------------------------------------

with LA14021_1;

with LA14021_0;

generic

     type data_rec is new LA14021_1.data_record with private;

package LA14021_2 is

     package util is new LA14021_0 (character, LA14021_1.loop_count);

     procedure flip_flop (rec1, rec2 : in out data_rec);

end LA14021_2;

---------------------------------------------------------

package body LA14021_2 is

     procedure flip_flop (rec1, rec2 : in out data_rec) is

     begin

          util.swap (rec1.info, rec2.info);

    end flip_flop;

end LA14021_2;

---------------------------------------------------------

with Report; use Report;

with LA14021_1;

with LA14021_2;

procedure LA140211 is

     package util is new LA14021_2 (LA14021_1.data_type);

     datum_1 : LA14021_1.data_type := LA14021_1.data_type'('a', 1);

     datum_2 : LA14021_1.data_type := LA14021_1.data_type'('b', 2);

begin

     Test ("LA14021", "Check that a compilation unit may " &

                      "not depend semantically on two " &

                      "different versions of the same " &

                      "compilation unit.  Check the case " &

                      "where a generic package depends on " &

                      "another generic package that is changed");

     util.flip_flop (datum_1, datum_2);

     if datum_1.info = 'b' then

          Failed ("Revised unit not used");

     elsif datum_1.info /= 'a' then

          Failed ("Incorrect value returned");

     end if;

     Result;

end LA140211;