2005-11-14 Hristian Kirtchev <kirtchev@adacore.com>

	    Javier Miranda  <miranda@adacore.com>

	* rtsfind.ads, exp_util.adb, exp_util.ads, exp_disp.adb, exp_disp.ads,
	exp_ch7.adb, sem_ch9.adb, snames.adb, snames.ads,
	exp_ch9.adb, exp_ch9.ads, exp_ch6.adb, exp_ch3.adb, exp_ch3.ads,
	einfo.ads, einfo.adb: Complete support for Ada 2005 interfaces.

	* a-tags.ads, a-tags.adb: Major rewrite and additions to implement
	properly new Ada 2005 interfaces (AI-345) and add run-time checks (via
	assertions).

	* exp_dbug.ads, exp_dbug.adb (Get_Secondary_DT_External_Name): New
	subprogram that generates the external name associated with a
	secondary dispatch table.
	(Get_Secondary_DT_External_Name): New subprogram that generates the
	external name associated with a secondary dispatch table.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@106965 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 37 insertions, 29 deletions

diff --git a/gcc/ada/exp_ch3.ads b/gcc/ada/exp_ch3.ads
index f4d6097dce0..ce2b7990a11 100644
--- a/gcc/ada/exp_ch3.ads
+++ b/gcc/ada/exp_ch3.ads
@@ -6,7 +6,7 @@
 --                                                                          --
 --                                 S p e c                                  --
 --                                                                          --
---           Copyright (C) 1992-2005 Free Software Foundation, Inc.         --
+--          Copyright (C) 1992-2005, Free Software Foundation, Inc.         --
 --                                                                          --
 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
 -- terms of the  GNU General Public License as published  by the Free Soft- --
@@ -40,12 +40,21 @@ package Exp_Ch3 is
    procedure Expand_Previous_Access_Type (Def_Id : Entity_Id);
    --  For a full type declaration that contains tasks, or that is a task,
    --  check whether there exists an access type whose designated type is an
-   --  incomplete declarations for the current composite type. If so, build
-   --  the master for that access type, now that it is known to denote an
-   --  object with tasks.
+   --  incomplete declarations for the current composite type. If so, build the
+   --  master for that access type, now that it is known to denote an object
+   --  with tasks.
 
    procedure Expand_Record_Extension (T : Entity_Id; Def : Node_Id);
-   --  Add a field _parent in the extension part of the record.
+   --  Add a field _parent in the extension part of the record
+
+   procedure Build_Class_Wide_Master (T : Entity_Id);
+   --  For access to class-wide limited types we must build a task master
+   --  because some subsequent extension may add a task component. To avoid
+   --  bringing in the tasking run-time whenever an access-to-class-wide
+   --  limited type is used, we use the soft-link mechanism and add a level of
+   --  indirection to calls to routines that manipulate Master_Ids. This must
+   --  also be used for anonymous access types whose designated type is a task
+   --  or synchronized interface.
 
    procedure Build_Discr_Checking_Funcs (N : Node_Id);
    --  Builds function which checks whether the component name is consistent
@@ -66,10 +75,10 @@ package Exp_Ch3 is
    --  constructed tree, and Typ is the type of the entity (the initialization
    --  procedure of the base type is the procedure that actually gets called).
    --  In_Init_Proc has to be set to True when the call is itself in an init
-   --  proc in order to enable the use of discriminals. Enclos_type is the
-   --  type of the init proc and it is used for various expansion cases
-   --  including the case where Typ is a task type which is a array component,
-   --  the indices of the enclosing type are used to build the string that
+   --  proc in order to enable the use of discriminals. Enclos_type is the type
+   --  of the init proc and it is used for various expansion cases including
+   --  the case where Typ is a task type which is a array component, the
+   --  indices of the enclosing type are used to build the string that
    --  identifies each task at runtime.
    --
    --  Discr_Map is used to replace discriminants by their discriminals in
@@ -84,33 +93,32 @@ package Exp_Ch3 is
 
    function Freeze_Type (N : Node_Id) return Boolean;
    --  This function executes the freezing actions associated with the given
-   --  freeze type node N and returns True if the node is to be deleted.
-   --  We delete the node if it is present just for front end purpose and
-   --  we don't want Gigi to see the node.  This function can't delete the
-   --  node itself since it would confuse any remaining processing of the
-   --  freeze node.
+   --  freeze type node N and returns True if the node is to be deleted. We
+   --  delete the node if it is present just for front end purpose and we don't
+   --  want Gigi to see the node. This function can't delete the node itself
+   --  since it would confuse any remaining processing of the freeze node.
 
    function Needs_Simple_Initialization (T : Entity_Id) return Boolean;
    --  Certain types need initialization even though there is no specific
-   --  initialization routine. In this category are access types (which
-   --  need initializing to null), packed array types whose implementation
-   --  is a modular type, and all scalar types if Normalize_Scalars is set,
-   --  as well as private types whose underlying type is present and meets
-   --  any of these criteria. Finally, descendants of String and Wide_String
-   --  also need initialization in Initialize/Normalize_Scalars mode.
+   --  initialization routine. In this category are access types (which need
+   --  initializing to null), packed array types whose implementation is a
+   --  modular type, and all scalar types if Normalize_Scalars is set, as well
+   --  as private types whose underlying type is present and meets any of these
+   --  criteria. Finally, descendants of String and Wide_String also need
+   --  initialization in Initialize/Normalize_Scalars mode.
 
    function Get_Simple_Init_Val
      (T    : Entity_Id;
       Loc  : Source_Ptr;
       Size : Uint := No_Uint) return Node_Id;
-   --  For a type which Needs_Simple_Initialization (see above), prepares
-   --  the tree for an expression representing the required initial value.
-   --  Loc is the source location used in constructing this tree which is
-   --  returned as the result of the call. The Size parameter indicates the
-   --  target size of the object if it is known (indicated by a value that
-   --  is not No_Uint and is greater than zero). If Size is not given (Size
-   --  set to No_Uint, or non-positive), then the Esize of T is used as an
-   --  estimate of the Size. The object size is needed to prepare a known
-   --  invalid value for use by Normalize_Scalars.
+   --  For a type which Needs_Simple_Initialization (see above), prepares the
+   --  tree for an expression representing the required initial value. Loc is
+   --  the source location used in constructing this tree which is returned as
+   --  the result of the call. The Size parameter indicates the target size of
+   --  the object if it is known (indicated by a value that is not No_Uint and
+   --  is greater than zero). If Size is not given (Size set to No_Uint, or
+   --  non-positive), then the Esize of T is used as an estimate of the Size.
+   --  The object size is needed to prepare a known invalid value for use by
+   --  Normalize_Scalars.
 
 end Exp_Ch3;