exp_ch4.adb (Expand_Allocator_Expression): When an initialized allocator's designated type is a class-wide type...

2005-06-14  Gary Dismukes  <dismukes@adacore.com>
	    Javier Miranda  <miranda@adacore.com>
	    Ed Schonberg  <schonberg@adacore.com>
	    Hristian Kirtchev  <kirtchev@adacore.com>

	* exp_ch4.adb (Expand_Allocator_Expression): When an initialized
	allocator's designated type is a class-wide type, and compiling for
	Ada 2005, emit a run-time check that the accessibility level of the
	type given in the allocator's expression is not deeper than the level
	of the allocator's access type.

	(Tagged_Membership): Modified to gives support to abstract interface
	types.

	* a-tags.ads, a-tags.adb (type Type_Specific_Data): Add component
	Access_Level.
	(Descendant_Tag): New predefined function
	(Is_Descendant_At_Same_Level): New predefined function
	(Get_Access_Level): New private function
	(Set_Access_Level): New private procedure
	(IW_Membership): New function. Given the tag of an object and the tag
	associated with an interface, evaluate if the object implements the
	interface.
	(Register_Interface_Tag): New procedure used to initialize the table of
	interfaces used by the IW_Membership function.
	(Set_Offset_To_Top): Initialize the Offset_To_Top field in the prologue
	of the dispatch table.
	(Inherit_TSD): Modified to copy the table of ancestor tags plus the
	table of interfaces of the parent.
	(Expanded_Name): Raise Tag_Error if the passed tag equals No_Tag.
	(External_Tag): Raise Tag_Error if the passed tag equals No_Tag.
	(Parent_Tag): Return No_Tag in the case of a root-level tagged type,
	and raise Tag_Error if the passed tag equalis No_Tag, to conform with
	Ada 2005 semantics for the new predefined function.

	* exp_attr.adb (Expand_N_Attribute, case Attribute_Input): Generate
	call to Descendant_Tag rather than Internal_Tag.
	(Expand_N_Attribute, case Attribute_Output): Emit a check to ensure that
	the accessibility level of the attribute's Item parameter is not deeper
	than the level of the attribute's prefix type. Tag_Error is raised if
	the check fails. The check is only emitted for Ada_05.
	(Find_Stream_Subprogram): If a TSS exists on the type itself for the
	requested stream attribute, use it.
	(Expand_N_Attribute_Reference): If the designated type is an interface
	then rewrite the referenced object as a conversion to force the
	displacement of the pointer to the secondary dispatch table.
	(Expand_N_Attribute_Reference, case 'Constrained): Return false if this
	is a dereference of an object with a constrained partial view.

	* exp_ch5.adb (Expand_N_Return_Statement): When a function's result
	type is a class-wide type, emit a run-time check that the accessibility
	level of the returned object is not deeper than the level of the
	function's master (only when compiling for Ada 2005).

	* exp_disp.ads, exp_disp.adb (Ada_Actions, Action_Is_Proc,
	Action_Nb_Arg): Add entries for new Get_Access_Level and
	Set_Access_Level routines in these tables.
	(Make_DT): Generate a call to set the accessibility level of the
	tagged type in its TSD.
	(Make_DT): Code cleanup. The functionality of generating all the
	secondary dispatch tables has been moved to freeze_record_type.
	(Make_Abstract_Interface_DT): Minor code cleanup.
	(Set_All_DT_Position): Code cleanup. As part of the code cleanup
	this subprogram implements a new algorithm that provides the
	same functionality and it is more clear in case of primitives
	associated with abstract interfaces.
	(Set_All_Interfaces_DTC_Entity): Removed. As part of the code
	clean up, the functionality of this subprogram is now provided
	by Set_All_DT_Position.
	(Write_DT): New subprogram: a debugging procedure designed to be called
	within gdb to display the dispatch tables associated with a tagged
	type.
	(Collect_All_Interfaces): New subprogram that collects the whole list
	of interfaces that are directly or indirectly implemented by a tagged
	type.
	(Default_Prim_Op_Position): New subprogram that returns the fixed
	position in the dispatch table of the default primitive operations.
	(Expand_Interface_Actuals): New subprogram to generate code that
	displaces all the actuals corresponding to class-wide interfaces to
	reference the interface tag of the actual object.
	(Expand_Interface_Conversion): New subprogram. Reference the base of
	the object to give access to the interface tag associated with the
	secondary dispatch table.
	(Expand_Interface_Thunk): New subprogram that generates the code of the
	thunk. This is required for compatibility with the C+ ABI.
	(Make_Abstract_Interface_DT): New subprogram that generate the
	declarations for the secondary dispatch tables associated with an
	abstract interface.
	(Set_All_Interfaces_DTC_Entity): New subprogram that sets the DTC_Entity
	attribute for each primitive operation covering interface subprograms
	(Expand_Dispatching_Call, Fill_DT_Entry, Make_DT, Set_All_DT_Position):
	These subprograms were upgraded to give support to abstract interfaces

	* rtsfind.ads (type RE_Id): Add RE_Descendant_Tag,
	RE_Is_Descendant_At_Same_Level, RE_Get_Access_Level, and
	RE_Set_Access_Level.
	(RE_Unit_Table): Add entries for new Ada.Tags operations.
	Add support to call the followig new run-time subprograms:
	IW_Membership, Register_Interface_Tag, and Set_Offset_To_Top

	* sem_ch3.adb (Constant_Redeclaration): Allow a deferred constant to
	match its full declaration when both have an access definition with
	statically matching designated subtypes.
	(Analyze_Component_Declaration): Delete commented out code that was
	incorrectly setting the scope of an anonymous access component's type.
	(Process_Discriminants): Set Is_Local_Anonymous_Access for the type of
	an access discriminant when the containing type is nonlimited.
	(Make_Incomplete_Type_Declaration): Create an incomplete type
	declaration for a record type that includes self-referential access
	components.
	(Check_Anonymous_Access_Types): Before full analysis of a record type
	declaration, create anonymous access types for each self-referential
	access component.
	(Analyze_Component_Declaration, Array_Type_Declaration): Indicate that
	an access component in this context is a Local_Anonymous_Access, for
	proper accessibility checks.
	(Access_Definition): Set properly the scope of the anonymous access type
	created for a stand-alone access object.
	(Find_Type_Of_Object): An object declaration may be given with an access
	definition.
	(Complete_Subprograms_Derivation): New subprogram used to complete
	type derivation of private tagged types implementing interfaces.
	In this case some interface primitives may have been overriden
	with the partial-view and, instead of re-calculating them, they
	are included in the list of primitive operations of the full-view.
	(Build_Derived_Record_Type): Modified to give support to private
	types implemening interfaces.
	(Access_Definition): Reject ALL on anonymous access types.
	(Build_Derived_Record_Type): In the case of Ada 2005, allow a tagged
	type derivation to occur at a deeper accessibility level than the
	parent type.
	For the case of derivation within a generic body however, disallow the
	derivation if the derived type has an ancestor that is a formal type
	declared in the formal part of an enclosing generic.
	(Analyze_Object_Declaration): For protected objects, remove the check
	that they cannot contain interrupt handlers if not declared at library
	level.
	(Add_Interface_Tag_Components): New subprogram to add the tag components
	corresponding to all the abstract interface types implemented by a
	record type or a derived record type.
	(Analyze_Private_Extension_Declaration, Build_Derived_Record_Type,
	Derived_Type_Declaration, Find_Type_Name, Inherit_Components,
	Process_Full_View, Record_Type_Declaration): Modified to give
	support to abstract interface types
	(Collect_Interfaces): New subprogram that collects the list of
	interfaces that are not already implemented by the ancestors
	(Process_Full_View): Set flag Has_Partial_Constrained_View appropriately
	when partial view has no discriminants and full view has defaults.
	(Constrain_Access): Reject a constraint on a general access type
	if the discriminants of the designated type have defaults.
	(Access_Subprogram_Declaration): Associate the Itype node with the inner
	full-type declaration or subprogram spec. This is required to handle
	nested anonymous declarations.
	(Analyze_Private_Extension_Declaration, Build_Derived_Record_Type,
	Derived_Type_Declaration, Find_Type_Name, Inherit_Components,
	Process_Full_View, Record_Type_Declaration): Modified to give
	support to abstract interface types
	(Derive_Subprograms): Addition of a new formal to indicate if
	we are in the case of an abstact-interface derivation
	(Find_Type_Of_Subtype_Indic): Moved from the body of the package
	to the specification because it is requied to analyze all the
	identifiers found in a list of interfaces

	* debug.adb: Complete documentation of flag "-gnatdZ"

	* exp_ch3.adb: Implement config version of persistent_bss pragma
	(Check_Stream_Attributes): Use Stream_Attribute_Available instead of
	testing for TSS presence to properly enforce visibility rules.
	(Freeze_Record_Type): Code cleanup. Modified to call the subprogram
	Make_Abstract_Interfaces_DT to generate the secondary tables
	associated with abstract interfaces.
	(Build_Init_Procedure): Modified to initialize all the tags
	corresponding.
	(Component_Needs_Simple_Initialization): Similar to other tags,
	interface tags do not need initialization.
	(Freeze_Record_Type): Modified to give support to abstract interface
	types.
	(Expand_N_Object_Declaration): Do not generate an initialization for
	a scalar temporary marked as internal.

	* exp_ch6.adb (Add_Simple_Call_By_Copy_Code): Handle properly an
	in-out parameter that is a component in an initialization procedure,
	whose constraint might depend on discriminants, and that may be
	misaligned because of packing or representation clauses.
	(Is_Legal_Copy): New predicate to determine whether a possibly
	misaligned in-out actual can actually be passed by copy/return. This
	is an error in case the type is by_reference, and a warning if this is
	the consequence of a DEC import pragma on the subprogram.
	(Expand_Call, Freeze_Subprogram): Modified to give support to abstract
	interface types
	(Expand_Inlined_Call): Mark temporary generated for the return value as
	internal, so that no useless scalar normalization is generated for it.
	(Expand_N_Subprogram_Declaration): Save unanalyzed body so calls to
	null procedure can always be inlined.
	(Expand_N_Subprogram_Declaration): If this is the declaration of a null
	procedure, generate an explicit empty body for it.

	* exp_util.ads, exp_util.adb (Find_Interface_ADT): New subprogram.
	Given a type implementing an interface, returns the corresponding
	access_disp_table value.
	(Find_Interface_Tag): New subprogram. Given a type implementing an
	interface, returns the record component containing the tag of the
	interface.
	(Find_Interface_Tag): New overloaded subprogram. Subsidiary to the
	previous ones that return the corresponding tag and access_disp_table
	entities.
	(Is_Predefined_Dispatching_Operation): Determines if a subprogram
	is a predefined primitive operation.
	(Expand_Subtype_From_Expr): If the expression is a selected component
	within an initialization procedure, compute its actual subtype, because
	the component may depend on the discriminants of the enclosing record.

	* i-cpp.ads, i-cpp.adb:
	This package has been left available for compatibility with previous
	versions of the frontend. As part of the new layout this is now a
	dummy package that uses declarations available at a-tags.ads

	* par-ch3.adb (P_Identifier_Declarations): Give an error for use of
	"constant access" and "aliased [constant] access" when not compiling
	with -gnat05.
	Suppress Ada 2005 keyword warning if -gnatwY used
	(P_Identifier_Declarations): Add support for object declarations with
	access definitions.
	(Private_Extension_Declaration): Complete the documentation
	(P_Derived_Type_Def_Or_Private_Ext_Decl): Fill the inteface_list
	attribute in case of private extension declaration
	(P_Type_Declaration): Mark as "abstract" the type declarations
	corresponding with protected, synchronized and task interfaces
	(P_Declarative_Items): "not" and "overriding" are overriding indicators
	for a subprogram or instance declaration.

	* sem_ch12.adb (Analyze_Subprogram_Instantiation): Verify that an
	instantiation that is a dispatching operation has controlling access
	parameters that are null excluding.
	Save and restore Ada_Version_Explicit, for implementation of AI-362
	(Validate_Derived_Type_Instance): Add check for abstract interface
	types.
	(Analyze_Formal_Package): Establish Instantiation source for the copy of
	the generic that is created to represent the formal package.
	(Analyze_Package_Instantiation): Instantiate body immediately if the
	package is a predefined unit that contains inlined subprograms, and
	we are compiling for a Configurable_Run_Time.
	(Instantiate_Formal_Subprogram): Indicate that null default subprogram
	If the program has a null default, generate an empty body for it.

	* sem_ch6.adb, sem_ch9.adb (Analyze_Subprograms_Declaration): Update
	error message condition, null procedures are correctly detected now.
	(New_Overloaded_Entity): Bypass trivial overriding indicator check
	for subprograms in the context of protected types. Instead, the
	indicator is examined in Sem_Ch9 while analysing the subprogram
	declaration.
	(Check_Overriding_Indicator): Check consistency of overriding indicator
	on subprogram stubs as well.
	(Analyze_Subprogram_Declaration): Diagnose null procedures declared at
	the library level.
	(Analize_Subprogram_Specification): When analyzing a subprogram in which
	the type of the first formal is a concurrent type, replace this type
	by the corresponding record type.
	(Analyze_Subprogram_Body): Undo the previous work.
	(Analyze_Procedure_Call): If the call has the form Object.Op, the
	analysis of the prefix ends up analyzing the call itself, after which
	we are done.
	(Has_Interface_Formals): New subprogram subsidiary to analyze
	subprogram_specification that returns true if some non
	class-wide interface subprogram is found
	(New_Overloaded_Entity): Modified to give support to abstract
	interface types
	(Conforming_Types): In Ada 2005 mode, conformance checking of anonymous
	access to subprograms must be recursive.
	(Is_Unchecked_Conversion): Improve the test that recognizes
	instantiations of Unchecked_Conversion, and allows them in bodies that
	are to be inlined by the front-end. When the body comes from an
	instantiation, a reference to Unchecked_Conversion will be an
	Expanded_Name, even though the body has not been analyzed yet.
	Replace Is_Overriding and Not_Overriding in subprogram_indication with
	Must_Override and Must_Not_Override, to better express intent of AI.
	(Analyze_Subprogram_Body): If an overriding indicator is given, check
	that it is consistent with the overrinding status of the subprogram
	at this point.
	(Analyze_Subprogram_Declaration): Indicate that a null procedure is
	always inlined.
	If the subprogram is a null procedure, indicate that it does not need
	a completion.

	* sem_disp.adb (Check_Controlling_Type): Give support to entities
	available through limited-with clauses.
	(Check_Dispatching_Operation): A stub acts like a body, and therefore is
	allowed as the last primitive of a tagged type if it has no previous
	spec.
	(Override_Dispatching_Operation, Check_Dispatching_Operation): Modified
	to give support to abstract interface types

	* sem_res.adb (Valid_Conversion): Perform an accessibility level check
	in the case where the target type is an anonymous access type of an
	object or component (that is, when Is_Local_Anonymous_Access is true).
	Prevent the special checks for conversions of access discriminants in
	the case where the discriminant belongs to a nonlimited type, since
	such discriminants have their accessibility level defined in the same
	way as a normal component of an anonymous access type.
	(Resolve_Allocator): When an allocator's designated type is a class-wide
	type, check that the accessibility level of type given in the
	allocator's expression or subtype indication is not statically deeper
	than the level of the allocator's access type.
	(Check_Discriminant_Use): Diagnose discriminant given by an expanded
	name in a discriminant constraint of a record component.
	(Resolve_Explicit_Dereference): Do not check whether the type is
	incomplete when the dereference is a use of an access discriminant in
	an initialization procedure.
	(Resolve_Type_Conversion): Handle conversions to abstract interface
	types.
	(Valid_Tagged_Conversion): The conversion of a tagged type to an
	abstract interface type is always valid.
	(Valid_Conversion): Modified to give support to abstract interface types
	(Resolve_Actuals): Enable full error reporting on view conversions
	between unrelated by_reference array types.
	The rule for view conversions of arrays with aliased components is
	weakened in Ada 2005.
	Call to obsolescent subprogram is now considered to be a violation of
	pragma Restrictions (No_Obsolescent_Features).
	(Check_Direct_Boolean_Operator): If the boolean operation has been
	constant-folded, there is nothing to check.
	(Resolve_Comparison_Op, Resolve_Equality_Op, Resolve_Boolean_Op): Defer
	check on possible violation of restriction No_Direct_Boolean_Operators
	until after expansion of operands, to prevent spurious errors when
	operation is constant-folded.

	* sem_type.ads, sem_type.adb (Covers, Intersect_Types, Specific_Type,
	Has_Compatible_Type): Modified to give support to abstract interface
	types.
	(Interface_Present_In_Ancestor): New function to theck if some ancestor
	of a given type implements a given interface

	* sem_ch4.adb (Analyze_Call): Handle properly an indirect call whose
	prefix is a parameterless function that returns an access_to_procedure.
	(Transform_Object_Operation): Handle properly function calls of the
	form Obj.Op (X), which prior to analysis appear as indexed components.
	(Analyze_One_Call): Complete the error notification to help new Ada
	2005 users.
	(Analyze_Allocator): For an allocator without an initial value, where
	the designated type has a constrained partial view, a discriminant
	constraint is illegal.

From-SVN: r101024

1 files changed, 2 insertions, 352 deletions

diff --git a/gcc/ada/i-cpp.adb b/gcc/ada/i-cpp.adb
index ca872c2..85efcea 100644
--- a/gcc/ada/i-cpp.adb
+++ b/gcc/ada/i-cpp.adb
@@ -6,7 +6,7 @@
 --                                                                          --
 --                                 B o d y                                  --
 --                                                                          --
---          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- --
@@ -31,357 +31,7 @@
 --                                                                          --
 ------------------------------------------------------------------------------
 
-with Ada.Tags;                use Ada.Tags;
-with System;                  use System;
-with System.Storage_Elements; use System.Storage_Elements;
+--  Dummy body to deal with bootstrap issues (there used to be a real body)
 
 package body Interfaces.CPP is
-
---  Structure of the Dispatch Table
-
---           +-----------------------+
---           |     Offset_To_Top     |
---           +-----------------------+
---           | Typeinfo_Ptr/TSD_Ptr  |----> Type Specific Data
---  Tag ---> +-----------------------+      +-------------------+
---           |        table of       |      | inheritance depth |
---           :     primitive ops     :      +-------------------+
---           |        pointers       |      |   expanded name   |
---           +-----------------------+      +-------------------+
---                                          |   external tag    |
---                                          +-------------------+
---                                          |   Hash table link |
---                                          +-------------------+
---                                          | Remotely Callable |
---                                          +-------------------+
---                                          | Rec Ctrler offset |
---                                          +-------------------+
---                                          | table of          |
---                                          :   ancestor        :
---                                          |      tags         |
---                                          +-------------------+
-
-   --  The declarations below need (extensive) comments ???
-
-   subtype Cstring is String (Positive);
-   type Cstring_Ptr is access all Cstring;
-   type Tag_Table is array (Natural range <>) of Vtable_Ptr;
-   pragma Suppress_Initialization (Tag_Table);
-
-   type Type_Specific_Data is record
-      Idepth        : Natural;
-      Expanded_Name : Cstring_Ptr;
-      External_Tag  : Cstring_Ptr;
-      HT_Link       : Tag;
-      Ancestor_Tags : Tag_Table (Natural);
-   end record;
-
-   type Vtable_Entry is record
-     Pfn : System.Address;
-   end record;
-
-   type Vtable_Entry_Array is array (Positive range <>) of Vtable_Entry;
-
-   type VTable is record
-      --  Offset_To_Top : Integer;
-      --  Typeinfo_Ptr  : System.Address; -- TSD is currently also here???
-      Prims_Ptr  : Vtable_Entry_Array (Positive);
-   end record;
-   --  Note: See comment in a-tags.adb explaining why the components
-   --        Offset_To_Top and Typeinfo_Ptr have been commented out.
-   --  -----------------------------------------------------------------------
-   --  The size of the Prims_Ptr array actually depends on the tagged type to
-   --  which it applies. For each tagged type, the expander computes the
-   --  actual array size, allocates the Dispatch_Table record accordingly, and
-   --  generates code that displaces the base of the record after the
-   --  Typeinfo_Ptr component. For this reason the first two components have
-   --  been commented in the previous declaration. The access to these
-   --  components is done by means of local functions.
-
-   ---------------------------
-   -- Unchecked Conversions --
-   ---------------------------
-
-   type Int_Ptr is access Integer;
-
-   function To_Int_Ptr is
-      new Unchecked_Conversion (System.Address, Int_Ptr);
-
-   function To_Cstring_Ptr is
-     new Unchecked_Conversion (Address, Cstring_Ptr);
-
-   function To_Address is
-     new Unchecked_Conversion (Cstring_Ptr, Address);
-
-   -----------------------
-   -- Local Subprograms --
-   -----------------------
-
-   function Length (Str : Cstring_Ptr) return Natural;
-   --  Length of string represented by the given pointer (treating the string
-   --  as a C-style string, which is Nul terminated).
-
-   function Offset_To_Top (T : Vtable_Ptr) return Integer;
-   --  Returns the current value of the offset_to_top component available in
-   --  the prologue of the dispatch table.
-
-   function Typeinfo_Ptr (T : Vtable_Ptr) return System.Address;
-   --  Returns the current value of the typeinfo_ptr component available in
-   --  the prologue of the dispatch table.
-
-   pragma Unreferenced (Offset_To_Top);
-   pragma Unreferenced (Typeinfo_Ptr);
-   --  These functions will be used for full compatibility with the C++ ABI
-
-   -----------------------
-   -- CPP_CW_Membership --
-   -----------------------
-
-   function CPP_CW_Membership
-     (Obj_Tag : Vtable_Ptr;
-      Typ_Tag : Vtable_Ptr) return Boolean
-   is
-      Pos : constant Integer := TSD (Obj_Tag).Idepth - TSD (Typ_Tag).Idepth;
-   begin
-      return Pos >= 0 and then TSD (Obj_Tag).Ancestor_Tags (Pos) = Typ_Tag;
-   end CPP_CW_Membership;
-
-   --------------------------
-   -- CPP_Get_External_Tag --
-   --------------------------
-
-   function CPP_Get_External_Tag (T : Vtable_Ptr) return Address is
-   begin
-      return To_Address (TSD (T).External_Tag);
-   end CPP_Get_External_Tag;
-
-   -------------------------
-   -- CPP_Get_Prim_Op_Address --
-   -------------------------
-
-   function CPP_Get_Prim_Op_Address
-     (T        : Vtable_Ptr;
-      Position : Positive) return Address
-   is
-   begin
-      return T.Prims_Ptr (Position).Pfn;
-   end CPP_Get_Prim_Op_Address;
-
-   -----------------------
-   -- CPP_Get_RC_Offset --
-   -----------------------
-
-   function CPP_Get_RC_Offset (T : Vtable_Ptr) return SSE.Storage_Offset is
-      pragma Warnings (Off, T);
-   begin
-      return 0;
-   end CPP_Get_RC_Offset;
-
-   -------------------------------
-   -- CPP_Get_Remotely_Callable --
-   -------------------------------
-
-   function CPP_Get_Remotely_Callable (T : Vtable_Ptr) return Boolean is
-      pragma Warnings (Off, T);
-   begin
-      return True;
-   end CPP_Get_Remotely_Callable;
-
-   --------------------
-   -- CPP_Inherit_DT --
-   --------------------
-
-   procedure CPP_Inherit_DT
-    (Old_T   : Vtable_Ptr;
-     New_T   : Vtable_Ptr;
-     Entry_Count : Natural)
-   is
-   begin
-      if Old_T /= null then
-         New_T.Prims_Ptr (1 .. Entry_Count)
-           := Old_T.Prims_Ptr (1 .. Entry_Count);
-      end if;
-   end CPP_Inherit_DT;
-
-   ---------------------
-   -- CPP_Inherit_TSD --
-   ---------------------
-
-   procedure CPP_Inherit_TSD
-     (Old_Tag : Vtable_Ptr;
-      New_Tag : Vtable_Ptr)
-   is
-      New_TSD_Ptr : constant Type_Specific_Data_Ptr := TSD (New_Tag);
-      Old_TSD_Ptr : Type_Specific_Data_Ptr;
-
-   begin
-      if Old_Tag /= null then
-         Old_TSD_Ptr        := TSD (Old_Tag);
-         New_TSD_Ptr.Idepth := Old_TSD_Ptr.Idepth + 1;
-         New_TSD_Ptr.Ancestor_Tags (1 .. New_TSD_Ptr.Idepth) :=
-           Old_TSD_Ptr.Ancestor_Tags (0 .. Old_TSD_Ptr.Idepth);
-      else
-         New_TSD_Ptr.Idepth := 0;
-      end if;
-
-      New_TSD_Ptr.Ancestor_Tags (0) := New_Tag;
-   end CPP_Inherit_TSD;
-
-   ---------------------------
-   -- CPP_Set_Expanded_Name --
-   ---------------------------
-
-   procedure CPP_Set_Expanded_Name (T : Vtable_Ptr; Value : Address) is
-   begin
-      TSD (T).Expanded_Name := To_Cstring_Ptr (Value);
-   end CPP_Set_Expanded_Name;
-
-   --------------------------
-   -- CPP_Set_External_Tag --
-   --------------------------
-
-   procedure CPP_Set_External_Tag (T : Vtable_Ptr; Value : Address) is
-   begin
-      TSD (T).External_Tag := To_Cstring_Ptr (Value);
-   end CPP_Set_External_Tag;
-
-   -----------------------------
-   -- CPP_Set_Prim_Op_Address --
-   -----------------------------
-
-   procedure CPP_Set_Prim_Op_Address
-     (T        : Vtable_Ptr;
-      Position : Positive;
-      Value    : Address)
-   is
-   begin
-      T.Prims_Ptr (Position).Pfn := Value;
-   end CPP_Set_Prim_Op_Address;
-
-   -----------------------
-   -- CPP_Set_RC_Offset --
-   -----------------------
-
-   procedure CPP_Set_RC_Offset (T : Vtable_Ptr; Value : SSE.Storage_Offset) is
-      pragma Warnings (Off, T);
-      pragma Warnings (Off, Value);
-   begin
-      null;
-   end CPP_Set_RC_Offset;
-
-   -------------------------------
-   -- CPP_Set_Remotely_Callable --
-   -------------------------------
-
-   procedure CPP_Set_Remotely_Callable (T : Vtable_Ptr; Value : Boolean) is
-      pragma Warnings (Off, T);
-      pragma Warnings (Off, Value);
-   begin
-      null;
-   end CPP_Set_Remotely_Callable;
-
-   -----------------
-   -- CPP_Set_TSD --
-   -----------------
-
-   procedure CPP_Set_TSD (T : Vtable_Ptr; Value : Address) is
-      use type System.Storage_Elements.Storage_Offset;
-      TSD_Ptr : constant Addr_Ptr :=
-                  To_Addr_Ptr (To_Address (T) - CPP_DT_Typeinfo_Ptr_Size);
-   begin
-      TSD_Ptr.all := Value;
-   end CPP_Set_TSD;
-
-   --------------------
-   -- Displaced_This --
-   --------------------
-
-   function Displaced_This
-    (Current_This : System.Address;
-     Vptr         : Vtable_Ptr;
-     Position     : Positive)
-     return         System.Address
-   is
-      pragma Warnings (Off, Vptr);
-      pragma Warnings (Off, Position);
-
-   begin
-      return Current_This;
-
-      --  why is the following here commented out ???
-      --  + Storage_Offset (Vptr.Prims_Ptr (Position).Delta1);
-   end Displaced_This;
-
-   -------------------
-   -- Expanded_Name --
-   -------------------
-
-   function Expanded_Name (T : Vtable_Ptr) return String is
-      Result : constant Cstring_Ptr := TSD (T).Expanded_Name;
-   begin
-      return Result (1 .. Length (Result));
-   end Expanded_Name;
-
-   ------------------
-   -- External_Tag --
-   ------------------
-
-   function External_Tag (T : Vtable_Ptr) return String is
-      Result : constant Cstring_Ptr := TSD (T).External_Tag;
-   begin
-      return Result (1 .. Length (Result));
-   end External_Tag;
-
-   ------------
-   -- Length --
-   ------------
-
-   function Length (Str : Cstring_Ptr) return Natural is
-      Len : Integer := 1;
-
-   begin
-      while Str (Len) /= ASCII.Nul loop
-         Len := Len + 1;
-      end loop;
-
-      return Len - 1;
-   end Length;
-
-   ------------------
-   -- Offset_To_Top --
-   ------------------
-
-   function Offset_To_Top (T : Vtable_Ptr) return Integer is
-      use type System.Storage_Elements.Storage_Offset;
-
-      TSD_Ptr : constant Int_Ptr
-        := To_Int_Ptr (To_Address (T) - CPP_DT_Prologue_Size);
-   begin
-      return TSD_Ptr.all;
-   end Offset_To_Top;
-
-   ------------------
-   -- Typeinfo_Ptr --
-   ------------------
-
-   function Typeinfo_Ptr (T : Vtable_Ptr) return System.Address is
-      use type System.Storage_Elements.Storage_Offset;
-      TSD_Ptr : constant Addr_Ptr :=
-                  To_Addr_Ptr (To_Address (T) - CPP_DT_Typeinfo_Ptr_Size);
-   begin
-      return TSD_Ptr.all;
-   end Typeinfo_Ptr;
-
-   ---------
-   -- TSD --
-   ---------
-
-   function TSD (T : Vtable_Ptr) return Type_Specific_Data_Ptr is
-      use type System.Storage_Elements.Storage_Offset;
-      TSD_Ptr : constant Addr_Ptr :=
-                  To_Addr_Ptr (To_Address (T) - CPP_DT_Typeinfo_Ptr_Size);
-   begin
-      return To_Type_Specific_Data_Ptr (TSD_Ptr.all);
-   end TSD;
-
 end Interfaces.CPP;