// { dg-options -Weffc++ }// { dg-do compile }// Copyright (C) 2001 Free Software Foundation, Inc.// Contributed by Nathan Sidwell 26 Apr 2002 <nathan@codesourcery.com>// Bug 5719 class A{  public:  A & operator+=( int );  A & operator+( int ); // { dg-warning ".* should return by value" "" }  A operator+=( float );  A operator+( float );};