la140262.am

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-- LA140262.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 instantiation depends on
--      a generic package instantiation that is changed.
--
-- TEST DESCRIPTION:
--      This test compiles a generic package, a generic  
--      instantiation of the generic package, another generic   
--      package, a generic instantiation of the second generic  
--      package that withs the first generic instantiation 
--      packages, and a main procedure that withs the instantiated 
--      generic package.  Then, a new version of the first generic  
--      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 instantiation and report "PASSED" at 
--      execution time.
--
-- SPECIAL REQUIREMENTS:
--      To build this test:
--         1) Compile the file LA140260 (and include the results in the
--            program library).
--         2) Compile the file LA140261 (and include the results in the
--            program library).
--         3) Compile the file LA140262 (and include the results in the
--            program library).
--         4) Compile the file LA140263 (and include the results in the
--            program library).
--         5) Attempt to build an executable image.
--         6) If an executable image results, run it.
--
-- TEST FILES:
--      This test consists of the following files:
--         LA140260.A
--         LA140261.A
--      -> LA140262.AM
--         LA140263.A
--
-- PASS/FAIL CRITERIA:    
--      The test passes if a link time error message reports that 
--      LA140260 is missing or obsolete, or that LA14026_5 is 
--      missing or obsolete (optional) 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   LA5008W baseline version
--     06 JUL 95   SAIC        Initial version
--     18 NOV 96   SAIC        Modified unit names and prologue to conform
--                             to coding conventions.
--     07 DEC 96   SAIC        Moved LA14026_3 to a separate file. Added
--                             pragma Elaborate to context clause of LA14026_5.
--
--!

with LA14026_0;
generic
     type rec is new LA14026_0.basic_rec with private;
package LA14026_4 is
     type extended_node;
     type extended_node_ptr is access extended_node;
     type extended_node is new rec with 
          record
               next : extended_node_ptr := null;
          end record;
     procedure add_next (node : in out extended_node; ptr : extended_node_ptr);
end LA14026_4;

---------------------------------------------------------
 
package body LA14026_4 is
     procedure add_next (node : in out extended_node; 
                         ptr : extended_node_ptr) is
     begin
          node.next := ptr;
     end add_next;
end LA14026_4;

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

with LA14026_3, LA14026_4;
pragma Elaborate (LA14026_4);
package LA14026_5 is new LA14026_4 (LA14026_3.node_type);

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

with Report;
use Report;
with LA14026_5;

procedure LA140262 is
     root : LA14026_5.extended_node_ptr := new LA14026_5.extended_node;
     next : LA14026_5.extended_node_ptr := new LA14026_5.extended_node;
begin
     Test ("LA14026","Check that a compilation unit may not depend " &
                     "semantically on two different versions of " &
                     "the same compilation unit.  Check the case " &
                     "where a generic instantiation depends on " &
                     "a generic package instantiation that is " &
                     "changed");

     
     LA14026_5.add_next (root.all, next);

     if root.all.next.serial_no = 2 then
          Failed ("Old version of unit used");
     elsif root.all.next.serial_no /= 5 then
          Failed ("Wrong value returned");
     end if;

     Result;
end LA140262;