--- a/gcc/doc/implement-cxx.texi	Sun Aug 21 07:07:55 2011 +0900
+++ b/gcc/doc/implement-cxx.texi	Fri Oct 27 22:46:09 2017 +0900
@@ -1,17 +1,16 @@
-@c Copyright (C) 2009, 2010
-@c Free Software Foundation, Inc.
+@c Copyright (C) 2009-2017 Free Software Foundation, Inc.
 @c This is part of the GCC manual.
 @c For copying conditions, see the file gcc.texi.
 
 @node C++ Implementation
-@chapter C++ Implementation-defined behavior
+@chapter C++ Implementation-Defined Behavior
 @cindex implementation-defined behavior, C++ language
 
 A conforming implementation of ISO C++ is required to document its
 choice of behavior in each of the areas that are designated
 ``implementation defined''.  The following lists all such areas,
-along with the section numbers from the ISO/IEC 14822:1998 and ISO/IEC
-14822:2003 standards.  Some areas are only implementation-defined in
+along with the section numbers from the ISO/IEC 14882:1998 and ISO/IEC
+14882:2003 standards.  Some areas are only implementation-defined in
 one version of the standard.
 
 Some choices depend on the externally determined ABI for the platform
@@ -32,7 +31,7 @@
 @end menu
 
 @node Conditionally-supported behavior
-@section Conditionally-supported behavior
+@section Conditionally-Supported Behavior
 
 @cite{Each implementation shall include documentation that identifies
 all conditionally-supported constructs that it does not support (C++0x
@@ -43,12 +42,14 @@
 @cite{Whether an argument of class type with a non-trivial copy
 constructor or destructor can be passed to ... (C++0x 5.2.2).}
 
-Such argument passing is not supported.
+Such argument passing is supported, using the same
+pass-by-invisible-reference approach used for normal function
+arguments of such types.
 
 @end itemize
 
 @node Exception handling
-@section Exception handling
+@section Exception Handling
 
 @itemize @bullet
 @item