boost 1.73.0: The practice of declaring the Bind placeholders (_1, _2, ...) in the global namespace is deprecated

src/Gui/MDIView.cpp

@@ -25,7 +25,7 @@
 
 #ifndef _PreComp_
 # include <boost/signals2.hpp>
-# include <boost/bind.hpp>
+# include <boost/bind/bind.hpp>
 # include <qapplication.h>
 # include <qregexp.h>
 # include <QEvent>
@@ -44,6 +44,7 @@
 #include "ViewProviderDocumentObject.h"
 
 using namespace Gui;
+namespace bp = boost::placeholders;
 
 TYPESYSTEM_SOURCE_ABSTRACT(Gui::MDIView,Gui::BaseView)
 
@@ -61,7 +62,7 @@ MDIView::MDIView(Gui::Document* pcDocument,QWidget* parent, Qt::WindowFlags wfla
     if (pcDocument)
     {
       connectDelObject = pcDocument->signalDeletedObject.connect
-        (boost::bind(&ActiveObjectList::objectDeleted, &ActiveObjects, _1));
+        (boost::bind(&ActiveObjectList::objectDeleted, &ActiveObjects, bp::_1));
       assert(connectDelObject.connected());
     }
 }