[multiple changes]

2010-09-09  Ed Schonberg  <schonberg@adacore.com>

	* exp_ch9.ads (Find_Master_Scope): New function, extracted from
	Build_Master_Entity, to find the proper scope for the master entity of
	a type that may contain tasks, in the presence of transient scopes.
	* exp_ch9.adb (Build_Master_Entity) Use new function.
	* exp_ch3.adb (Build_Class_Wide_Master): ditto.

2010-09-09  Vincent Celier  <celier@adacore.com>

	* prj-attr.adb: Add new attributes Leading_Library_Options and
	Linker'Leading_Switches.
	* snames.ads-tmpl: Add new standard names Leading_Library_Options and
	Leading_Switches.

From-SVN: r164060

gcc/ada/ChangeLog

+2010-09-09  Ed Schonberg  <schonberg@adacore.com>
+
+	* exp_ch9.ads (Find_Master_Scope): New function, extracted from
+	Build_Master_Entity, to find the proper scope for the master entity of
+	a type that may contain tasks, in the presence of transient scopes.
+	* exp_ch9.adb (Build_Master_Entity) Use new function.
+	* exp_ch3.adb (Build_Class_Wide_Master): ditto.
+
+2010-09-09  Vincent Celier  <celier@adacore.com>
+
+	* prj-attr.adb: Add new attributes Leading_Library_Options and
+	Linker'Leading_Switches.
+	* snames.ads-tmpl: Add new standard names Leading_Library_Options and
+	Leading_Switches.
+
 2010-09-09  Javier Miranda  <miranda@adacore.com>
 
 	* sem_ch3.adb (Derive_Subprogram): The code that checks if a

gcc/ada/exp_ch3.adb

@@ -41,8 +41,8 @@ with Exp_Strm; use Exp_Strm;
 with Exp_Tss;  use Exp_Tss;
 with Exp_Util; use Exp_Util;
 with Freeze;   use Freeze;
-with Nlists;   use Nlists;
 with Namet;    use Namet;
+with Nlists;   use Nlists;
 with Nmake;    use Nmake;
 with Opt;      use Opt;
 with Restrict; use Restrict;
@@ -792,6 +792,7 @@ package body Exp_Ch3 is
       Decl : Node_Id;
       P    : Node_Id;
       Par  : Node_Id;
+      Scop : Entity_Id;
 
    begin
       --  Nothing to do if there is no task hierarchy
@@ -810,9 +811,11 @@ package body Exp_Ch3 is
          P := Parent (T);
       end if;
 
+      Scop := Find_Master_Scope (T);
+
       --  Nothing to do if we already built a master entity for this scope
 
-      if not Has_Master_Entity (Scope (T)) then
+      if not Has_Master_Entity (Scop) then
 
          --  First build the master entity
          --    _Master : constant Master_Id := Current_Master.all;
@@ -828,9 +831,9 @@ package body Exp_Ch3 is
                Make_Explicit_Dereference (Loc,
                  New_Reference_To (RTE (RE_Current_Master), Loc)));
 
+         Set_Has_Master_Entity (Scop);
          Insert_Action (P, Decl);
          Analyze (Decl);
-         Set_Has_Master_Entity (Scope (T));
 
          --  Now mark the containing scope as a task master. Masters
          --  associated with return statements are already marked at

gcc/ada/exp_ch9.adb

@@ -2481,31 +2481,7 @@ package body Exp_Ch9 is
       S    : Entity_Id;
 
    begin
-      S := Scope (E);
-
-      --  Ada 2005 (AI-287): Do not set/get the has_master_entity reminder
-      --  in internal scopes, unless present already.. Required for nested
-      --  limited aggregates, where the expansion of task components may
-      --  generate inner blocks. If the block is the rewriting of a call
-      --  or the scope is an extended return statement this is valid master.
-      --  The master in an extended return is only used within the return,
-      --  and is subsequently overwritten in Move_Activation_Chain, but it
-      --  must exist now.
-
-      if Ada_Version >= Ada_05 then
-         while Is_Internal (S) loop
-            if Nkind (Parent (S)) = N_Block_Statement
-              and then
-                Nkind (Original_Node (Parent (S))) = N_Procedure_Call_Statement
-            then
-               exit;
-            elsif Ekind (S) = E_Return_Statement then
-               exit;
-            else
-               S := Scope (S);
-            end if;
-         end loop;
-      end if;
+      S := Find_Master_Scope (E);
 
       --  Nothing to do if we already built a master entity for this scope
       --  or if there is no task hierarchy.
@@ -2534,14 +2510,7 @@ package body Exp_Ch9 is
       Insert_Before (P, Decl);
       Analyze (Decl);
 
-      --  Ada 2005 (AI-287): Set the has_master_entity reminder in the
-      --  non-internal scope selected above.
-
-      if Ada_Version >= Ada_05 then
-         Set_Has_Master_Entity (S);
-      else
-         Set_Has_Master_Entity (Scope (E));
-      end if;
+      Set_Has_Master_Entity (S);
 
       --  Now mark the containing scope as a task master
 
@@ -11136,6 +11105,43 @@ package body Exp_Ch9 is
             Make_Integer_Literal (Loc, 0)));
    end Family_Size;
 
+   -----------------------
+   -- Find_Master_Scope --
+   -----------------------
+
+   function Find_Master_Scope (E : Entity_Id) return Entity_Id is
+      S : Entity_Id;
+
+   begin
+      --  In Ada2005, the master is the innermost enclosing scope that is not
+      --  transient. If the enclosing block is the rewriting of a call or the
+      --  scope is an extended return statement this is valid master. The
+      --  master in an extended return is only used within the return, and is
+      --  subsequently overwritten in Move_Activation_Chain, but it must exist
+      --  now before that overwriting occurs.
+
+      S := Scope (E);
+
+      if Ada_Version >= Ada_05 then
+         while Is_Internal (S) loop
+            if Nkind (Parent (S)) = N_Block_Statement
+              and then
+                Nkind (Original_Node (Parent (S))) = N_Procedure_Call_Statement
+            then
+               exit;
+
+            elsif Ekind (S) = E_Return_Statement then
+               exit;
+
+            else
+               S := Scope (S);
+            end if;
+         end loop;
+      end if;
+
+      return S;
+   end Find_Master_Scope;
+
    -----------------------------------
    -- Find_Task_Or_Protected_Pragma --
    -----------------------------------

gcc/ada/exp_ch9.ads

@@ -263,6 +263,15 @@ package Exp_Ch9 is
    --  return the external version of a protected operation, which locks
    --  the object before invoking the internal protected subprogram body.
 
+   function Find_Master_Scope (E : Entity_Id) return Entity_Id;
+   --  When a type includes tasks, a master entity is created in the scope, to
+   --  be used by the runtime during activation. In general the master is the
+   --  immediate scope in which the type is declared, but in Ada2005, in the
+   --  presence of synchronized classwide interfaces, the immediate scope of
+   --  an anonymous access type may be a transient scope, which has no run-time
+   --  presence. In this case, the scope of the master is the innermost scope
+   --  that comes from source.
+
    function First_Protected_Operation (D : List_Id) return Node_Id;
    --  Given the declarations list for a protected body, find the
    --  first protected operation body.

gcc/ada/prj-attr.adb

@@ -99,6 +99,7 @@ package body Prj.Attr is
    "SVlibrary_version#" &
    "LVlibrary_interface#" &
    "SVlibrary_auto_init#" &
+   "LVleading_library_options#" &
    "LVlibrary_options#" &
    "SVlibrary_src_dir#" &
    "SVlibrary_ali_dir#" &
@@ -246,6 +247,7 @@ package body Prj.Attr is
    "Plinker#" &
    "LVrequired_switches#" &
    "Ladefault_switches#" &
+   "LcOleading_switches#" &
    "LcOswitches#" &
    "LVlinker_options#" &
    "SVmap_file_option#" &

gcc/ada/snames.ads-tmpl

@@ -1075,7 +1075,9 @@ package Snames is
    Name_Include_Path_File                : constant Name_Id := N + $;
    Name_Inherit_Source_Path              : constant Name_Id := N + $;
    Name_Languages                        : constant Name_Id := N + $;
+   Name_Leading_Library_Options          : constant Name_Id := N + $;
    Name_Leading_Required_Switches        : constant Name_Id := N + $;
+   Name_Leading_Switches                 : constant Name_Id := N + $;
    Name_Library                          : constant Name_Id := N + $;
    Name_Library_Ali_Dir                  : constant Name_Id := N + $;
    Name_Library_Auto_Init                : constant Name_Id := N + $;