diff --git a/gcc/ada/ChangeLog b/gcc/ada/ChangeLog
index 61cb60a3a509608347ec90d5e852b7cfbbae56d2..f9e1bda9c2115346c158589df46cd1cbcb7fcdd4 100644
--- a/gcc/ada/ChangeLog
+++ b/gcc/ada/ChangeLog
@@ -1,3 +1,29 @@
+2011-08-02  Ed Falis  <falis@adacore.com>
+
+	* s-taprop-vxworks.adb, s-intman-vxworks.adb, s-intman-vxworks.ads:
+	Update header.
+
+2011-08-02  Bob Duff  <duff@adacore.com>
+
+	* opt.ads: Minor comment fix.
+
+2011-08-02  Bob Duff  <duff@adacore.com>
+
+	* sem_ch12.adb (Analyze_Package_Instantiation,
+	Analyze_Subprogram_Instantiation): Turn off style checking while
+	analyzing an instance. Whatever style checks that apply to the generic
+	unit should apply, so it makes no sense to apply them in an instance.
+	This was causing trouble when compiling an instance of a runtime
+	unit that violates the -gnatyO switch.
+	* stylesw.adb (Set_Style_Check_Options): "when 'O' =>" was missing from
+	one of the two case statements, causing spurious errors.
+
+2011-08-02  Robert Dewar  <dewar@adacore.com>
+
+	* uname.adb: Minor reformatting.
+	* gnatcmd.adb: Minor reformatting.
+	* exp_attr.adb: Minor reformatting.
+
 2011-08-02  Ed Schonberg  <schonberg@adacore.com>
 
 	* exp_ch5.adb (Expand_N_Assignment_Statement): under restriction
diff --git a/gcc/ada/exp_attr.adb b/gcc/ada/exp_attr.adb
index 008c8138dcb3fbc4e6d4f6dfd127ab9494d0e85c..8990e0b293b5660296f3a9caebaad959d1c494b2 100644
--- a/gcc/ada/exp_attr.adb
+++ b/gcc/ada/exp_attr.adb
@@ -5355,7 +5355,6 @@ package body Exp_Attr is
            Attribute_Universal_Literal_String     |
            Attribute_Wchar_T_Size                 |
            Attribute_Word_Size                    =>
-
          raise Program_Error;
 
       --  The Asm_Input and Asm_Output attributes are not expanded at this
@@ -5364,9 +5363,7 @@ package body Exp_Attr is
 
       when Attribute_Asm_Input                    |
            Attribute_Asm_Output                   =>
-
          null;
-
       end case;
 
    exception
@@ -5523,6 +5520,14 @@ package body Exp_Attr is
       --  in the run time used. In the case of a configurable run time, it
       --  is normal that some subprograms are not there.
 
+      --  I don't understand this routine at all, why is this not just a
+      --  call to RTE_Available? And if for some reason we need a different
+      --  routine with different semantics, why is not in Rtsfind ???
+
+      ------------------
+      -- Is_Available --
+      ------------------
+
       function Is_Available (Entity : RE_Id) return Boolean is
       begin
          --  Assume that the unit will always be available when using a
@@ -5532,6 +5537,8 @@ package body Exp_Attr is
            or else RTE_Available (Entity);
       end Is_Available;
 
+   --  Start of processing for Find_Stream_Subprogram
+
    begin
       if Present (Ent) then
          return Ent;
@@ -5550,11 +5557,12 @@ package body Exp_Attr is
       --  This is disabled for AAMP, to avoid creating dependences on files not
       --  supported in the AAMP library (such as s-fileio.adb).
 
-      --  In the case of using a configurable run time, it is very likely
+      --  Note: In the case of using a configurable run time, it is very likely
       --  that stream routines for string types are not present (they require
       --  file system support). In this case, the specific stream routines for
       --  strings are not used, relying on the regular stream mechanism
-      --  instead.
+      --  instead. That is why we include the test Is_Available when dealing
+      --  with these cases.
 
       if VM_Target /= JVM_Target
         and then not AAMP_On_Target
diff --git a/gcc/ada/gnatcmd.adb b/gcc/ada/gnatcmd.adb
index cdd159a248a675f54b57f9988a387da9464665f2..8f22273725c75f947f1a71de8c696e2c141726ae 100644
--- a/gcc/ada/gnatcmd.adb
+++ b/gcc/ada/gnatcmd.adb
@@ -1356,9 +1356,7 @@ procedure GNATCmd is
       New_Line;
    end Non_VMS_Usage;
 
-   -------------------------------------
-   -- Start of processing for GNATCmd --
-   -------------------------------------
+--  Start of processing for GNATCmd
 
 begin
    --  Initializations
diff --git a/gcc/ada/opt.ads b/gcc/ada/opt.ads
index 61fc1f1e3f3b6047e3f02f6469259f3444f360a2..3f3b87256996e36dafed0d8573882286b902b78d 100644
--- a/gcc/ada/opt.ads
+++ b/gcc/ada/opt.ads
@@ -1184,7 +1184,7 @@ package Opt is
    Style_Check : Boolean := False;
    --  GNAT
    --  Set True to perform style checks. Activates checks carried out in
-   --  package Style (see body of this package for details of checks) This
+   --  package Style (see body of this package for details of checks). This
    --  flag is set True by either the -gnatg or -gnaty switches.
 
    Suppress_All_Inlining : Boolean := False;
diff --git a/gcc/ada/s-intman-vxworks.adb b/gcc/ada/s-intman-vxworks.adb
index 35ab83cee478ea46df77df061043dd44c9e5f604..f1576e9264428861546c3ec17cad34d74729b0d6 100644
--- a/gcc/ada/s-intman-vxworks.adb
+++ b/gcc/ada/s-intman-vxworks.adb
@@ -19,10 +19,10 @@
 -- additional permissions described in the GCC Runtime Library Exception,   --
 -- version 3.1, as published by the Free Software Foundation.               --
 --                                                                          --
--- In particular,  you can freely  distribute your programs  built with the --
--- GNAT Pro compiler, including any required library run-time units,  using --
--- any licensing terms  of your choosing.  See the AdaCore Software License --
--- for full details.                                                        --
+-- You should have received a copy of the GNU General Public License and    --
+-- a copy of the GCC Runtime Library Exception along with this program;     --
+-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
+-- <http://www.gnu.org/licenses/>.                                          --
 --                                                                          --
 -- GNARL was developed by the GNARL team at Florida State University.       --
 -- Extensive contributions were provided by Ada Core Technologies, Inc.     --
diff --git a/gcc/ada/s-intman-vxworks.ads b/gcc/ada/s-intman-vxworks.ads
index d73324d9bc712f594ca451646adf1d8ab2b29876..564c1391feac5ad49bc204fc44d81bd0c323de21 100644
--- a/gcc/ada/s-intman-vxworks.ads
+++ b/gcc/ada/s-intman-vxworks.ads
@@ -19,10 +19,10 @@
 -- additional permissions described in the GCC Runtime Library Exception,   --
 -- version 3.1, as published by the Free Software Foundation.               --
 --                                                                          --
--- In particular,  you can freely  distribute your programs  built with the --
--- GNAT Pro compiler, including any required library run-time units,  using --
--- any licensing terms  of your choosing.  See the AdaCore Software License --
--- for full details.                                                        --
+-- You should have received a copy of the GNU General Public License and    --
+-- a copy of the GCC Runtime Library Exception along with this program;     --
+-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
+-- <http://www.gnu.org/licenses/>.                                          --
 --                                                                          --
 -- GNARL was developed by the GNARL team at Florida State University.       --
 -- Extensive contributions were provided by Ada Core Technologies, Inc.     --
diff --git a/gcc/ada/s-taprop-vxworks.adb b/gcc/ada/s-taprop-vxworks.adb
index c2b04a55c573f3ea3deb75f8628df76c50ee211c..d51a2ebaa7b477cc248db29095d78157bd69efa0 100644
--- a/gcc/ada/s-taprop-vxworks.adb
+++ b/gcc/ada/s-taprop-vxworks.adb
@@ -19,10 +19,10 @@
 -- additional permissions described in the GCC Runtime Library Exception,   --
 -- version 3.1, as published by the Free Software Foundation.               --
 --                                                                          --
--- In particular,  you can freely  distribute your programs  built with the --
--- GNAT Pro compiler, including any required library run-time units,  using --
--- any licensing terms  of your choosing.  See the AdaCore Software License --
--- for full details.                                                        --
+-- You should have received a copy of the GNU General Public License and    --
+-- a copy of the GCC Runtime Library Exception along with this program;     --
+-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
+-- <http://www.gnu.org/licenses/>.                                          --
 --                                                                          --
 -- GNARL was developed by the GNARL team at Florida State University.       --
 -- Extensive contributions were provided by Ada Core Technologies, Inc.     --
diff --git a/gcc/ada/sem_ch12.adb b/gcc/ada/sem_ch12.adb
index 81c59d5e124fab386faf2e87ec2737cf3e2100c5..218028f7ddfdb486f197aba41e4839dd6cf60b7a 100644
--- a/gcc/ada/sem_ch12.adb
+++ b/gcc/ada/sem_ch12.adb
@@ -2975,6 +2975,8 @@ package body Sem_Ch12 is
          return False;
       end Might_Inline_Subp;
 
+      Save_Style_Check : constant Boolean := Style_Check;
+
    --  Start of processing for Analyze_Package_Instantiation
 
    begin
@@ -2987,6 +2989,12 @@ package body Sem_Ch12 is
 
       Instantiation_Node := N;
 
+      --  Turn off style checking in instances. If the check is enabled on the
+      --  generic unit, a warning in an instance would just be noise. If not
+      --  enabled on the generic, then a warning in an instance is just wrong.
+
+      Style_Check := False;
+
       --  Case of instantiation of a generic package
 
       if Nkind (N) = N_Package_Instantiation then
@@ -3571,6 +3579,8 @@ package body Sem_Ch12 is
          Set_Defining_Identifier (N, Act_Decl_Id);
       end if;
 
+      Style_Check := Save_Style_Check;
+
    <<Leave>>
       if Has_Aspects (N) then
          Analyze_Aspect_Specifications (N, Act_Decl_Id);
@@ -3585,6 +3595,8 @@ package body Sem_Ch12 is
          if Env_Installed then
             Restore_Env;
          end if;
+
+         Style_Check := Save_Style_Check;
    end Analyze_Package_Instantiation;
 
    --------------------------
@@ -4104,6 +4116,8 @@ package body Sem_Ch12 is
          end if;
       end Analyze_Instance_And_Renamings;
 
+      Save_Style_Check : constant Boolean := Style_Check;
+
    --  Start of processing for Analyze_Subprogram_Instantiation
 
    begin
@@ -4117,6 +4131,13 @@ package body Sem_Ch12 is
       --  Make node global for error reporting
 
       Instantiation_Node := N;
+
+      --  Turn off style checking in instances. If the check is enabled on the
+      --  generic unit, a warning in an instance would just be noise. If not
+      --  enabled on the generic, then a warning in an instance is just wrong.
+
+      Style_Check := False;
+
       Preanalyze_Actuals (N);
 
       Init_Env;
@@ -4352,6 +4373,8 @@ package body Sem_Ch12 is
          Generic_Renamings_HTable.Reset;
       end if;
 
+      Style_Check := Save_Style_Check;
+
    <<Leave>>
       if Has_Aspects (N) then
          Analyze_Aspect_Specifications (N, Act_Decl_Id);
@@ -4366,6 +4389,8 @@ package body Sem_Ch12 is
          if Env_Installed then
             Restore_Env;
          end if;
+
+         Style_Check := Save_Style_Check;
    end Analyze_Subprogram_Instantiation;
 
    -------------------------
diff --git a/gcc/ada/stylesw.adb b/gcc/ada/stylesw.adb
index 9a59996558713e5150a4a5de847e7f7d7f71dbdd..7c9d462cc234e10b1b3c40f07a961bd79f0f85ac 100644
--- a/gcc/ada/stylesw.adb
+++ b/gcc/ada/stylesw.adb
@@ -530,6 +530,9 @@ package body Stylesw is
             when 'o' =>
                Style_Check_Order_Subprograms     := False;
 
+            when 'O' =>
+               Style_Check_Missing_Overriding    := False;
+
             when 'p' =>
                Style_Check_Pragma_Casing         := False;
 
diff --git a/gcc/ada/uname.adb b/gcc/ada/uname.adb
index 9628867ae0ca58f60132b39601f268880ae8389c..eb514b75c2383be31dd599c3192c7ef338fd5a12 100644
--- a/gcc/ada/uname.adb
+++ b/gcc/ada/uname.adb
@@ -349,9 +349,7 @@ package body Uname is
          return N;
       end Get_Parent;
 
-   -------------------------------------------
-   -- Start of Processing for Get_Unit_Name --
-   -------------------------------------------
+   --  Start of processing for Get_Unit_Name
 
    begin
       Node := N;