diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 407fd674bfc..7bda77ed87d 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2013-02-28  Paolo Carlini  <paolo.carlini@oracle.com>
+
+	PR c++/55813
+	* doc/invoke.texi ([-Wctor-dtor-privacy]): Complete.
+
 2013-02-28  Georg-Johann Lay  <avr@gjlay.de>
 
 	PR target/56445
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index c209cc60061..fe72f627dd5 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -2455,7 +2455,9 @@ union U @{
 @opindex Wno-ctor-dtor-privacy
 Warn when a class seems unusable because all the constructors or
 destructors in that class are private, and it has neither friends nor
-public static member functions.
+public static member functions.  Also warn if there are no non-private
+methods, and there's at least one private member function that isn't
+a constructor or destructor.
 
 @item -Wdelete-non-virtual-dtor @r{(C++ and Objective-C++ only)}
 @opindex Wdelete-non-virtual-dtor