re PR c++/23194 (Unhelpful diagnostic for incorrect pointer-to-member function syntax)

	PR c++/23194
	* typeck.c (cp_build_function_call): Show example syntax in
	diagnostic.

From-SVN: r137086

gcc/cp/ChangeLog

+2008-06-24  Jonathan Wakely  <jwakely.gcc@gmail.com>
+
+	PR c++/23194
+	* typeck.c (cp_build_function_call): Show example syntax in
+	diagnostic.
+
 2008-06-21  Jonathan Wakely  <jwakely.gcc@gmail.com>
 
 	* typeck.c (composite_pointer_type_r, cxx_sizeof_expr,

gcc/cp/typeck.c

@@ -2850,8 +2850,8 @@ cp_build_function_call (tree function, tree params, tsubst_flags_t complain)
     {
       if (complain & tf_error)
 	error ("must use %<.*%> or %<->*%> to call pointer-to-member "
-	       "function in %<%E (...)%>",
-	       original);
+	       "function in %<%E (...)%>, e.g. %<(... ->* %E) (...)%>",
+	       original, original);
       return error_mark_node;
     }