diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 152d8e603ea..e7263548c2b 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2005-03-31  Gabriel Dos Reis  <gdr@integrable-solutions.net>
+
+	PR c++/18644
+	* doc/invoke.texi (-Wsynth): Don't document, as it now is void of
+	semantics. 
+
 2005-03-31  Alan Modra  <amodra@bigpond.net.au>
 
 	PR target/20611
diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index d2328387385..b63906cb694 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,3 +1,8 @@
+2005-03-31  Gabriel Dos Reis  <gdr@integrable-solutions.net>
+
+	PR c++/18644
+	* call.c (build_new_op): Remove check for -Wsynth.
+
 2005-03-31  Jan Hubicka  <jh@suse.cz>
 
 	* decl2.c (finish_objects): Mark ctor as needed.
diff --git a/gcc/cp/call.c b/gcc/cp/call.c
index 5737e4fc0a1..131e175631e 100644
--- a/gcc/cp/call.c
+++ b/gcc/cp/call.c
@@ -3750,20 +3750,6 @@ build_new_op (enum tree_code code, int flags, tree arg1, tree arg2, tree arg3,
 	  if (overloaded_p)
 	    *overloaded_p = true;
 
-	  if (warn_synth
-	      && fnname == ansi_assopname (NOP_EXPR)
-	      && DECL_ARTIFICIAL (cand->fn)
-	      && candidates->next
-	      && ! candidates->next->next)
-	    {
-	      warning ("using synthesized %q#D for copy assignment",
-			  cand->fn);
-	      cp_warning_at ("  where cfront would use %q#D",
-			     cand == candidates
-			     ? candidates->next->fn
-			     : candidates->fn);
-	    }
-
 	  result = build_over_call (cand, LOOKUP_NORMAL);
 	}
       else
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index c750c995677..2f8c7ac3d43 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -188,7 +188,7 @@ in the following sections.
 -Weffc++  -Wno-deprecated @gol
 -Wno-non-template-friend  -Wold-style-cast @gol
 -Woverloaded-virtual  -Wno-pmf-conversions @gol
--Wsign-promo  -Wsynth}
+-Wsign-promo}
 
 @item Objective-C and Objective-C++ Language Options
 @xref{Objective-C and Objective-C++ Dialect Options,,Options Controlling
@@ -1794,13 +1794,6 @@ enumerated type to a signed type, over a conversion to an unsigned type of
 the same size.  Previous versions of G++ would try to preserve
 unsignedness, but the standard mandates the current behavior.
 
-@item -Wsynth @r{(C++ only)}
-@opindex Wsynth
-@cindex warning for synthesized methods
-@cindex synthesized methods, warning
-Warn when G++'s synthesis behavior does not match that of cfront.  For
-instance:
-
 @smallexample
 struct A @{
   operator int ();