diff gcc/testsuite/ada/acats/tests/c7/c761002.a @ 111:04ced10e8804

gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
parents
children
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/ada/acats/tests/c7/c761002.a	Fri Oct 27 22:46:09 2017 +0900
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+-- C761002.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 objects of a controlled type that are created
+--      by an allocator are finalized at the appropriate time.  In 
+--      particular, check that such objects are not finalized due to 
+--      completion of the master in which they were allocated if the 
+--      corresponding access type is declared outside of that master.
+--
+--      Check that Unchecked_Deallocation of a controlled 
+--      object causes finalization of that object.
+--
+-- TEST DESCRIPTION:
+--      This test derives a type from Ada.Finalization.Controlled, and
+--      declares access types to that type in various scope scenarios.
+--      The dispatching procedure Finalize is redefined for the derived
+--      type to perform a check that it has been called at the 
+--      correct time.  This is accomplished using a global variable 
+--      which indicates what state the software is currently 
+--      executing.  The test utilizes the TCTouch facilities to 
+--      verify that Finalize is called the correct number of times, at 
+--      the correct times.  Several calls are made to validate passing 
+--      the null string to check that Finalize has NOT been called at 
+--      that point.
+--
+--
+-- CHANGE HISTORY:
+--      06 Dec 94   SAIC    ACVC 2.0
+--
+--!
+
+with Ada.Finalization;
+package C761002_0 is
+  type Global is new Ada.Finalization.Controlled with null record;
+  procedure Finalize( It: in out Global );
+  
+  type Second is new Ada.Finalization.Limited_Controlled with null record;
+  procedure Finalize( It: in out Second );
+end C761002_0;
+
+with Report;
+with TCTouch;
+package body C761002_0 is
+
+  procedure Finalize( It: in out Global ) is
+  begin
+    TCTouch.Touch('F');  ------------------------------------------------- F
+  end Finalize;
+
+  procedure Finalize( It: in out Second ) is
+  begin
+    TCTouch.Touch('S');  ------------------------------------------------- S
+  end Finalize;
+end C761002_0;
+
+with Report;
+with TCTouch;
+with C761002_0;
+with Unchecked_Deallocation;
+procedure C761002 is
+
+  -- check the straightforward case
+  procedure Subtest_1 is
+    type Access_1 is access C761002_0.Global;
+    V1 : Access_1;
+    procedure Allocate is
+      V2 : Access_1;
+    begin
+      V2 := new C761002_0.Global;
+      V1 := V2;  -- "dead" assignment must not be optimized away due to
+                 -- finalization "side effects", many more of these follow
+    end Allocate;
+  begin
+    Allocate;
+    -- no calls to Finalize should have occurred at this point
+    TCTouch.Validate("","Allocated nested, retained");
+  end Subtest_1;
+  
+  -- check Unchecked_Deallocation
+  procedure Subtest_2 is
+    type Access_2 is access C761002_0.Global;
+    procedure Free is
+              new Unchecked_Deallocation(C761002_0.Global, Access_2);
+    V1 : Access_2;
+    V2 : Access_2;
+
+    procedure Allocate is
+    begin
+      V1 := new C761002_0.Global;
+      V2 := new C761002_0.Global;
+    end Allocate;
+
+  begin
+    Allocate;
+    -- no calls to Finalize should have occurred at this point.
+    TCTouch.Validate("","Allocated nested, non-local");
+    
+    Free(V1); -- instance of Unchecked_Deallocation
+    -- should cause the finalization of V1.all
+    TCTouch.Validate("F","Unchecked Deallocation");
+  end Subtest_2; -- leaving this scope should cause the finalization of V2.all
+  
+  -- check various master-exit scenarios
+  -- the "Fake" parameters are used to avoid unwanted optimizations
+  procedure Subtest_3 is
+    procedure With_Local_Block is
+      type Access_3 is access C761002_0.Global;
+      V1 : Access_3;
+    begin
+      declare
+        V2 : Access_3 := new C761002_0.Global;
+      begin
+        V1 := V2;
+      end;
+      TCTouch.Validate("","Local Block, normal exit");
+      -- the allocated object should be finalized on leaving this scope
+    end With_Local_Block;
+    
+    procedure With_Local_Block_Return(Fake: Integer) is
+      type Access_4 is access C761002_0.Global;
+      V1 : Access_4 := new C761002_0.Global;
+    begin
+      if Fake = 0 then
+        declare
+          V2 : Access_4;
+        begin
+          V2 := new C761002_0.Global;
+          return; -- the two allocated objects should be finalized
+        end;      -- upon leaving this scope
+      else
+        V1 := null;
+      end if;
+    end With_Local_Block_Return;
+
+    procedure With_Goto(Fake: Integer) is
+      type Access_5 is access C761002_0.Global;
+      V1 : Access_5 := new C761002_0.Global;
+      V2 : Access_5;
+      V3 : Access_5;
+    begin
+      if Fake = 0 then
+        declare
+          type Access_6 is access C761002_0.Second;
+          V6 : Access_6;
+        begin
+          V6 := new C761002_0.Second;
+          goto check;
+        end;
+      else
+        V2 := V1;
+      end if;
+      V3 := V2;
+<<check>>
+      TCTouch.Validate("S","goto past master end");
+     end With_Goto;
+
+  begin
+    With_Local_Block;
+    TCTouch.Validate("F","Local Block, normal exit, after master");
+
+    With_Local_Block_Return( Report.Ident_Int(0) );
+    TCTouch.Validate("FF","Local Block, return from block");
+
+    With_Goto( Report.Ident_Int(0) );
+    TCTouch.Validate("F","With Goto");
+
+  end Subtest_3;
+
+  procedure Subtest_4 is
+
+    Oops : exception;
+    
+    procedure Alley( Fake: Integer ) is
+      type Access_1 is access C761002_0.Global;
+      V1 : Access_1;
+    begin
+      V1 := new C761002_0.Global;
+      if Fake = 1 then
+        raise Oops;
+      end if;
+      V1 := null;
+    end Alley;
+  
+  begin
+    Catch: begin
+      Alley( Report.Ident_Int(1) );
+    exception
+      when Oops   => TCTouch.Validate("F","leaving via exception");
+      when others => Report.Failed("Wrong exception");
+    end Catch;
+  end Subtest_4;
+
+begin  -- Main test procedure.
+
+  Report.Test ("C761002", "Check that objects of a controlled type created "
+                        & "by an allocator are finalized appropriately. " 
+                        & "Check that Unchecked_Deallocation of a "
+                        & "controlled object causes finalization " 
+                        & "of that object" );
+  
+  Subtest_1;
+  -- leaving the scope of the access type should finalize the 
+  -- collection
+  TCTouch.Validate("F","Allocated nested, Subtest 1");
+  
+  Subtest_2;
+  -- Unchecked_Deallocation already finalized one of the two 
+  -- objects allocated, the other should be the only one finalized 
+  -- at leaving the scope of the access type.
+  TCTouch.Validate("F","Allocated non-local");
+
+  Subtest_3;
+  -- there should be no remaining finalizations from this subtest
+  TCTouch.Validate("","Localized objects");
+
+  Subtest_4;
+  -- there should be no remaining finalizations from this subtest
+  TCTouch.Validate("","Exception testing");
+
+  Report.Result;
+
+end C761002;