[multiple changes]

2014-07-31  Pascal Obry  <obry@adacore.com>

	* s-fileio.adb: Remove obsolete comment.

2014-07-31  Vincent Celier  <celier@adacore.com>

	* a-strbou.ads ("=" (Bounded_String, Bounded_String): Add
	overriding keyword before function to avoid error when compiler
	is called with -gnatyO (check overriding indicators).

2014-07-31  Tucker Taft  <taft@adacore.com>

	* gnat_ugn.texi: Add a paragraph pointing the reader
	to the "plugins" example.

2014-07-31  Hristian Kirtchev  <kirtchev@adacore.com>

	* freeze.adb (Freeze_Expression): Document the
	purpose of the parent chain traversal.

From-SVN: r213350

gcc/ada/ChangeLog

+2014-07-31  Pascal Obry  <obry@adacore.com>
+
+	* s-fileio.adb: Remove obsolete comment.
+
+2014-07-31  Vincent Celier  <celier@adacore.com>
+
+	* a-strbou.ads ("=" (Bounded_String, Bounded_String): Add
+	overriding keyword before function to avoid error when compiler
+	is called with -gnatyO (check overriding indicators).
+
+2014-07-31  Tucker Taft  <taft@adacore.com>
+
+	* gnat_ugn.texi: Add a paragraph pointing the reader
+	to the "plugins" example.
+
+2014-07-31  Hristian Kirtchev  <kirtchev@adacore.com>
+
+	* freeze.adb (Freeze_Expression): Document the
+	purpose of the parent chain traversal.
+
 2014-07-31  Robert Dewar  <dewar@adacore.com>
 
 	* checks.ads, checks.adb (Activate_Overflow_Check): Do not set flag for

gcc/ada/a-strbou.ads

@@ -6,7 +6,7 @@
 --                                                                          --
 --                                 S p e c                                  --
 --                                                                          --
---          Copyright (C) 1992-2010, Free Software Foundation, Inc.         --
+--          Copyright (C) 1992-2014, Free Software Foundation, Inc.         --
 --                                                                          --
 -- This specification is derived from the Ada Reference Manual for use with --
 -- GNAT. The copyright notice above, and the license provisions that follow --
@@ -607,7 +607,7 @@ package Ada.Strings.Bounded is
          High   : Natural)
          renames Super_Slice;
 
-      function "="
+      overriding function "="
         (Left  : Bounded_String;
          Right : Bounded_String) return Boolean
          renames Equal;

gcc/ada/freeze.adb

@@ -5973,12 +5973,12 @@ package body Freeze is
          return;
       end if;
 
-      --  Loop for looking at the right place to insert the freeze nodes,
-      --  exiting from the loop when it is appropriate to insert the freeze
-      --  node before the current node P.
-
-      --  Also checks some special exceptions to the freezing rules. These
-      --  cases result in a direct return, bypassing the freeze action.
+      --  Examine the enclosing context by climbing the parent chain. The
+      --  traversal serves two purposes - to detect scenarios where freezeing
+      --  is not needed and to find the proper insertion point for the freeze
+      --  nodes. Although somewhat similar to Insert_Actions, this traversal
+      --  is freezing semantics-sensitive. Inserting freeze nodes blindly in
+      --  the tree may result in types being frozen too early.
 
       P := N;
       loop

gcc/ada/gnat_ugn.texi

@@ -18053,6 +18053,11 @@ pragma Linker_Options ("-lmy_lib");
 @end smallexample
 @end itemize
 
+Note that you may also load a library dynamically at
+run time given its filename, as illustrated in the GNAT ``plugins'' example
+in the directory @file{share/examples/gnat/plugins} within the GNAT
+install area.
+
 @node Stand-alone Ada Libraries
 @section Stand-alone Ada Libraries
 @cindex Stand-alone library, building, using

gcc/ada/s-fileio.adb

@@ -34,9 +34,9 @@ with Ada.IO_Exceptions;          use Ada.IO_Exceptions;
 with Ada.Unchecked_Deallocation;
 
 with Interfaces.C;
-with Interfaces.C_Streams; use Interfaces.C_Streams;
+with Interfaces.C_Streams;       use Interfaces.C_Streams;
 
-with System.Case_Util;    use System.Case_Util;
+with System.Case_Util;           use System.Case_Util;
 with System.CRTL;
 with System.OS_Lib;
 with System.Soft_Links;
@@ -120,12 +120,12 @@ package body System.File_IO is
       Creat   : Boolean;
       Amethod : Character;
       Fopstr  : out Fopen_String);
-   --  Determines proper open mode for a file to be opened in the given
-   --  Ada mode. Text is true for a text file and false otherwise, and
-   --  Creat is true for a create call, and False for an open call. The
-   --  value stored in Fopstr is a nul-terminated string suitable for a
-   --  call to fopen or freopen. Amethod is the character designating
-   --  the access method from the Access_Method field of the FCB.
+   --  Determines proper open mode for a file to be opened in the given Ada
+   --  mode. Text is true for a text file and false otherwise, and Creat is
+   --  true for a create call, and False for an open call. The value stored
+   --  in Fopstr is a nul-terminated string suitable for a call to fopen or
+   --  freopen. Amethod is the character designating the access method from
+   --  the Access_Method field of the FCB.
 
    function Errno_Message
      (Name  : String;
@@ -387,10 +387,6 @@ package body System.File_IO is
    -- Finalize --
    --------------
 
-   --  Note: we do not need to worry about locking against multiple task access
-   --  in this routine, since it is called only from the environment task just
-   --  before terminating execution.
-
    procedure Finalize (V : in out File_IO_Clean_Up_Type) is
       pragma Warnings (Off, V);