Each file in this commit has an instance where a pointer is checked at

one point in the code and then not checked in another point in the code.
If it needed to be checked once, it needs to be checked the other time. If not
the application could segfault.

1 files changed, 5 insertions, 5 deletions

diff --git a/library/qpeapplication.cpp b/library/qpeapplication.cpp
index 34f5e6a..d959c7a 100644
--- a/library/qpeapplication.cpp
+++ b/library/qpeapplication.cpp
@@ -1580,390 +1580,390 @@ void QPEApplication::systemMessage( const QCString& msg, const QByteArray& data
     }
 
 
 #endif
 }
 
 
 
 
 
 /*!
   \internal
 */
 bool QPEApplication::raiseAppropriateWindow()
 {
     bool r=FALSE;
 
     // 1. Raise the main widget
     QWidget *top = d->qpe_main_widget;
     if ( !top ) top = mainWidget();
 
     if ( top && d->keep_running ) {
     if ( top->isVisible() )
         r = TRUE;
     else if (d->preloaded) {
         // We are preloaded and not visible.. pretend we just started..
 #ifndef QT_NO_COP
         QCopEnvelope e("QPE/System", "fastAppShowing(QString)");
         e << d->appName;
 #endif
     }
 
     d->show_mx(top,d->nomaximize, d->appName);
     top->raise();
     }
 
     QWidget *topm = activeModalWidget();
 
     // 2. Raise any parentless widgets (except top and topm, as they
     //     are raised before and after this loop).  Order from most
     //     recently raised as deepest to least recently as top, so
     //     that repeated calls cycle through widgets.
     QWidgetList *list = topLevelWidgets();
     if ( list ) {
     bool foundlast = FALSE;
     QWidget* topsub = 0;
     if ( d->lastraised ) {
         for (QWidget* w = list->first(); w; w = list->next()) {
         if ( !w->parentWidget() && w != topm && w->isVisible() && !w->isDesktop() ) {
             if ( w == d->lastraised )
             foundlast = TRUE;
             if ( foundlast ) {
             w->raise();
             topsub = w;
             }
         }
         }
     }
     for (QWidget* w = list->first(); w; w = list->next()) {
         if ( !w->parentWidget() && w != topm && w->isVisible() && !w->isDesktop() ) {
         if ( w == d->lastraised )
             break;
         w->raise();
         topsub = w;
         }
     }
     d->lastraised = topsub;
     delete list;
     }
 
     // 3. Raise the active modal widget.
     if ( topm ) {
     topm->show();
     topm->raise();
     // If we haven't already handled the fastAppShowing message
     if (!top && d->preloaded) {
 #ifndef QT_NO_COP
         QCopEnvelope e("QPE/System", "fastAppShowing(QString)");
         e << d->appName;
 #endif
     }
     r = FALSE;
     }
 
     return r;
 }
 
 
 void QPEApplication::pidMessage( const QCString& msg, const QByteArray& data)
 {
 #ifdef Q_WS_QWS
 
     if ( msg == "quit()" ) {
         tryQuit();
     }
     else if ( msg == "quitIfInvisible()" ) {
         if ( d->qpe_main_widget && !d->qpe_main_widget->isVisible() )
             quit();
     }
     else if ( msg == "close()" ) {
         hideOrQuit();
     }
     else if ( msg == "disablePreload()" ) {
         d->preloaded = FALSE;
         d->keep_running = TRUE;
         /* so that quit will quit */
     }
     else if ( msg == "enablePreload()" ) {
         if (d->qpe_main_widget)
             d->preloaded = TRUE;
         d->keep_running = TRUE;
         /* so next quit won't quit */
     }
     else if ( msg == "raise()" ) {
         d->keep_running = TRUE;
         d->notbusysent = FALSE;
         raiseAppropriateWindow();
         // Tell the system we're still chugging along...
         QCopEnvelope e("QPE/System", "appRaised(QString)");
         e << d->appName;
     }
     else if ( msg == "flush()" ) {
         emit flush();
         // we need to tell the desktop
         QCopEnvelope e( "QPE/Desktop", "flushDone(QString)" );
         e << d->appName;
     }
     else if ( msg == "reload()" ) {
         emit reload();
     }
     else if ( msg == "setDocument(QString)" ) {
         d->keep_running = TRUE;
         QDataStream stream( data, IO_ReadOnly );
         QString doc;
         stream >> doc;
         QWidget *mw = mainWidget();
         if ( !mw )
             mw = d->qpe_main_widget;
         if ( mw )
             Global::setDocument( mw, doc );
 
     } else if ( msg == "QPEProcessQCop()" ) {
             processQCopFile();
             d->sendQCopQ();
         }else
         {
             bool p = d->keep_running;
             d->keep_running = FALSE;
             emit appMessage( msg, data);
             if ( d->keep_running ) {
                 d->notbusysent = FALSE;
                 raiseAppropriateWindow();
                 if ( !p ) {
                     // Tell the system we're still chugging along...
 #ifndef QT_NO_COP
                     QCopEnvelope e("QPE/System", "appRaised(QString)");
                     e << d->appName;
 #endif
                 }
             }
             if ( p )
                 d->keep_running = p;
     }
 #endif
 }
 
 
 /*!
   Sets widget \a mw as the mainWidget() and shows it. For small windows,
   consider passing TRUE for \a nomaximize rather than the default FALSE.
 
   \sa showMainDocumentWidget()
 */
 void QPEApplication::showMainWidget( QWidget* mw, bool nomaximize )
 {
 //        setMainWidget(mw); this breaks FastLoading because lastWindowClose() would quit
             d->show(mw, nomaximize );
 }
 
 /*!
   Sets widget \a mw as the mainWidget() and shows it. For small windows,
   consider passing TRUE for \a nomaximize rather than the default FALSE.
 
   This calls designates the application as
   a \link docwidget.html document-oriented\endlink application.
 
   The \a mw widget \e must have this slot: setDocument(const QString&).
 
   \sa showMainWidget()
 */
 void QPEApplication::showMainDocumentWidget( QWidget* mw, bool nomaximize )
 {
-    if ( mw && argc() == 2 )
-        Global::setDocument( mw, QString::fromUtf8(argv()[1]) );
+    if ( mw ) {
+       if ( argc() == 2 )
+           Global::setDocument( mw, QString::fromUtf8(argv()[1]) );
 
-
-//    setMainWidget(mw); see above
-    d->show(mw, nomaximize );
+        d->show(mw, nomaximize );
+    }
 }
 
 
 /*!
   If an application is started via a \link qcop.html QCop\endlink
   message, the application will process the \link qcop.html
   QCop\endlink message and then quit. If the application calls this
   function while processing a \link qcop.html QCop\endlink message,
   after processing its outstanding \link qcop.html QCop\endlink
   messages the application will start 'properly' and show itself.
 
   \sa keepRunning()
 */
 void QPEApplication::setKeepRunning()
 {
     if ( qApp && qApp->inherits( "QPEApplication" ) ) {
         QPEApplication * qpeApp = ( QPEApplication* ) qApp;
         qpeApp->d->keep_running = TRUE;
     }
 }
 
 /*!
   Returns TRUE if the application will quit after processing the
   current list of qcop messages; otherwise returns FALSE.
 
   \sa setKeepRunning()
 */
 bool QPEApplication::keepRunning() const
 {
     return d->keep_running;
 }
 
 /*!
   \internal
 */
 void QPEApplication::internalSetStyle( const QString &style )
 {
 #if QT_VERSION >= 0x030000
     if ( style == "QPE" ) {
         setStyle( new QPEStyle );
     }
     else {
         QStyle *s = QStyleFactory::create( style );
         if ( s )
             setStyle( s );
     }
 #else
     if ( style == "Windows" ) {
         setStyle( new QWindowsStyle );
     }
     else if ( style == "QPE" ) {
         setStyle( new QPEStyle );
     }
     else if ( style == "Light" ) {
         setStyle( new LightStyle );
     }
 #ifndef QT_NO_STYLE_PLATINUM
     else if ( style == "Platinum" ) {
         setStyle( new QPlatinumStyle );
     }
 #endif
 #ifndef QT_NO_STYLE_MOTIF
     else if ( style == "Motif" ) {
         setStyle( new QMotifStyle );
     }
 #endif
 #ifndef QT_NO_STYLE_MOTIFPLUS
     else if ( style == "MotifPlus" ) {
         setStyle( new QMotifPlusStyle );
     }
 #endif
 
     else {
         QStyle *sty = 0;
         QString path = QPEApplication::qpeDir ( ) + "plugins/styles/";
 
 #ifdef Q_OS_MACX
         if ( style. find ( ".dylib" ) > 0 )
             path += style;
         else
             path = path + "lib" + style. lower ( ) + ".dylib"; // compatibility
 #else
         if ( style. find ( ".so" ) > 0 )
             path += style;
         else
             path = path + "lib" + style. lower ( ) + ".so"; // compatibility
 #endif
         static QLibrary *lastlib = 0;
         static StyleInterface *lastiface = 0;
 
         QLibrary *lib = new QLibrary ( path );
         StyleInterface *iface = 0;
 
         if (( lib-> queryInterface ( IID_Style, ( QUnknownInterface ** ) &iface ) == QS_OK ) && iface )
             sty = iface-> style ( );
 
         if ( sty ) {
             setStyle ( sty );
 
             if ( lastiface )
                 lastiface-> release ( );
             lastiface = iface;
 
             if ( lastlib ) {
                 lastlib-> unload ( );
                 delete lastlib;
             }
             lastlib = lib;
         }
         else {
             if ( iface )
                 iface-> release ( );
             delete lib;
 
             setStyle ( new LightStyle ( ));
         }
     }
 #endif
 }
 
 /*!
   \internal
 */
 void QPEApplication::prepareForTermination( bool willrestart )
 {
     if ( willrestart ) {
         QLabel *lblWait = new QLabel( tr( "Please wait..." ), 0, "wait hack", QWidget::WStyle_Customize |
                                       QWidget::WStyle_NoBorder | QWidget::WStyle_Tool );
         lblWait->setAlignment( QWidget::AlignCenter );
         lblWait->show();
         lblWait->showMaximized();
     }
     { QCopEnvelope envelope( "QPE/System", "forceQuit()" );
     }
     processEvents(); // ensure the message goes out.
 }
 
 /*!
   \internal
 */
 void QPEApplication::shutdown()
 {
     // Implement in server's QPEApplication subclass
 }
 
 /*!
   \internal
 */
 void QPEApplication::restart()
 {
     // Implement in server's QPEApplication subclass
 }
 
 static QPtrDict<void>* stylusDict = 0;
 static void createDict()
 {
     if ( !stylusDict )
         stylusDict = new QPtrDict<void>;
 }
 
 /*!
   Returns the current StylusMode for widget \a w.
 
   \sa setStylusOperation() StylusMode
 */
 QPEApplication::StylusMode QPEApplication::stylusOperation( QWidget* w )
 {
     if ( stylusDict )
         return ( StylusMode ) ( int ) stylusDict->find( w );
     return LeftOnly;
 }
 
 /*!
     \enum QPEApplication::StylusMode
 
     \value LeftOnly the stylus only generates LeftButton
                        events (the default).
     \value RightOnHold the stylus generates RightButton events
                        if the user uses the press-and-hold gesture.
 
     \sa setStylusOperation() stylusOperation()
 */
 
 /*!
   Causes widget \a w to receive mouse events according to the stylus
   \a mode.
 
   \sa stylusOperation() StylusMode
 */
 void QPEApplication::setStylusOperation( QWidget * w, StylusMode mode )
 {
     createDict();