re PR ada/15808 (Illegal program not detected, RM 3.9.3(10))

    gcc/ada/
	PR ada/15808
	* sem_ch6.adb (Check_Private_Overriding): Check for generic packages
	as well.

    gcc/testsuite/
	PR ada/15808
	* gnat.dg/specs/abstract_private.ads: New.

From-SVN: r139190

gcc/ada/ChangeLog

+2008-08-18  Samuel Tardieu  <sam@rfc1149.net>
+
+	PR ada/15808
+	* sem_ch6.adb (Check_Private_Overriding): Check for generic packages
+	as well.
+
 2008-08-17  Aaron W. LaFramboise  <aaronavay62@aaronwl.com>
 
 	* adaint.c (_gnat_set_close_on_exec) [_WIN32]: Implement.

gcc/ada/sem_ch6.adb

@@ -6481,7 +6481,7 @@ package body Sem_Ch6 is
 
          procedure Check_Private_Overriding (T : Entity_Id) is
          begin
-            if Ekind (Current_Scope) = E_Package
+            if Is_Package_Or_Generic_Package (Current_Scope)
               and then In_Private_Part (Current_Scope)
               and then Visible_Part_Type (T)
               and then not In_Instance

gcc/testsuite/ChangeLog

+2008-08-18  Samuel Tardieu  <sam@rfc1149.net>
+
+	PR ada/15808
+	* gnat.dg/specs/abstract_private.ads: New.
+
 2008-08-18  Richard Guenther  <rguenther@suse.de>
 
 	* gcc.dg/fold-alloca-1.c: Scan cfg dump instead of cleanup_cfg1.

gcc/testsuite/gnat.dg/specs/abstract_private.ads

+generic
+package Abstract_Private is
+
+   type T1 is abstract tagged private;
+   procedure P1 (X : T1) is abstract;
+
+   type T2 is abstract tagged private;
+
+private
+
+   type T1 is abstract tagged null record;
+   procedure P2 (X : T1) is abstract; -- { dg-error "must be visible" }
+
+   type T2 is abstract new T1 with null record;
+   procedure P1 (X : T2) is abstract;
+
+end Abstract_Private;