[multiple changes]

2012-01-10  Pascal Obry  <obry@adacore.com>

	* prj-nmsc.adb (Check_Library_Attributes): Kill check for object/source
	directories for aggregate libraries.

2012-01-10  Matthew Heaney  <heaney@adacore.com>

	* a-cdlili.adb, a-cdlili.ads, a-cihama.adb, a-cihama.ads, a-coinve.adb,
	a-coinve.ads, a-ciorse.adb, a-ciorse.ads, a-coorma.adb, a-coorma.ads,
	a-cborma.adb, a-cborma.ads, a-cidlli.adb, a-cidlli.ads, a-cimutr.adb,
	a-cimutr.ads, a-cihase.adb, a-cihase.ads, a-cohama.adb, a-cohama.ads,
	a-coorse.adb, a-coorse.ads, a-cbhama.adb, a-cbhama.ads, a-cborse.adb,
	a-cborse.ads, a-comutr.adb, a-comutr.ads, a-ciorma.adb, a-cobove.adb,
	a-ciorma.ads, a-cobove.ads, a-convec.adb, a-convec.ads, a-cohase.adb,
	a-cohase.ads, a-cbdlli.adb, a-cbdlli.ads, a-cbmutr.adb, a-cbmutr.ads,
	a-cbhase.adb, a-cbhase.ads (Reference, Constant_Reference): Declare
	container parameter as aliased in/in out.
	Code clean ups.

2012-01-10  Bob Duff  <duff@adacore.com>

	* s-os_lib.ads: Improve comment.

2012-01-10  Geert Bosch  <bosch@adacore.com>

	* s-gearop.adb (Forward_Eliminate): Avoid improper aliasing
	for complex Scalar.

From-SVN: r183060

1 files changed, 31 insertions, 17 deletions

diff --git a/gcc/ada/a-cdlili.adb b/gcc/ada/a-cdlili.adb
index f56578c..55defae 100644
--- a/gcc/ada/a-cdlili.adb
+++ b/gcc/ada/a-cdlili.adb
@@ -219,6 +219,29 @@ package body Ada.Containers.Doubly_Linked_Lists is
       pragma Warnings (On);
    end Clear;
 
+   ------------------------
+   -- Constant_Reference --
+   ------------------------
+
+   function Constant_Reference
+     (Container : aliased List;
+      Position  : Cursor) return Constant_Reference_Type
+   is
+   begin
+      if Position.Container = null then
+         raise Constraint_Error with "Position cursor has no element";
+      end if;
+
+      if Position.Container /= Container'Unrestricted_Access then
+         raise Program_Error with
+           "Position cursor designates wrong container";
+      end if;
+
+      pragma Assert (Vet (Position), "bad cursor in Constant_Reference");
+
+      return (Element => Position.Node.Element'Access);
+   end Constant_Reference;
+
    --------------
    -- Contains --
    --------------
@@ -1277,31 +1300,22 @@ package body Ada.Containers.Doubly_Linked_Lists is
    -- Reference --
    ---------------
 
-   function Constant_Reference
-     (Container : List;
-      Position  : Cursor) return Constant_Reference_Type
-   is
-   begin
-      pragma Unreferenced (Container);
-
-      if Position.Container = null then
-         raise Constraint_Error with "Position cursor has no element";
-      end if;
-
-      return (Element => Position.Node.Element'Access);
-   end Constant_Reference;
-
    function Reference
-     (Container : List;
+     (Container : aliased in out List;
       Position  : Cursor) return Reference_Type
    is
    begin
-      pragma Unreferenced (Container);
-
       if Position.Container = null then
          raise Constraint_Error with "Position cursor has no element";
       end if;
 
+      if Position.Container /= Container'Unchecked_Access then
+         raise Program_Error with
+           "Position cursor designates wrong container";
+      end if;
+
+      pragma Assert (Vet (Position), "bad cursor in function Reference");
+
       return (Element => Position.Node.Element'Access);
    end Reference;