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.

8 files changed, 48 insertions, 39 deletions

diff --git a/libopie2/opieui/big-screen/osplitter.cpp b/libopie2/opieui/big-screen/osplitter.cpp
index 78e919a..5d1e2cf 100644
--- a/libopie2/opieui/big-screen/osplitter.cpp
+++ b/libopie2/opieui/big-screen/osplitter.cpp
@@ -206,49 +206,49 @@ void OSplitter::removeWidget( OSplitter* split)
  * @param label The label of the possible Tab
  */
 void OSplitter::addWidget( QWidget* wid, const QString& icon, const QString& label )
 {
 #ifdef DEBUG
     if (!wid )
         return;
 #endif
     OSplitterContainer cont;
     cont.widget = wid;
     cont.icon =icon;
     cont.name = label;
 
     m_container.append( cont );
 
     /*
      *
      */
     if (!m_splitter.isEmpty() && (m_tabWidget || m_parentTab ) )
         setTabWidget( m_parentTab );
     else
     {
         if (m_hbox )
             addToBox( cont );
-        else
+        else if (m_tabWidget)
             addToTab( cont );
     }
 }
 
 
 /**
  * Removes the widget from the tab widgets if necessary.
  * OSplitter drops ownership of this widget and the widget
  * will be reparented i tto 0.
  * The widget will not be deleted.
  *
  * @param w The widget to be removed
  */
 void OSplitter::removeWidget( QWidget* w)
 {
     ContainerList::Iterator it;
     for ( it = m_container.begin(); it != m_container.end(); ++it )
         if ( (*it).widget == w )
             break;
 
     if (it == m_container.end() )
         return;
 
 
diff --git a/library/qpeapplication.cpp b/library/qpeapplication.cpp
index 34f5e6a..d959c7a 100644
--- a/library/qpeapplication.cpp
+++ b/library/qpeapplication.cpp
@@ -1748,55 +1748,55 @@ void QPEApplication::pidMessage( const QCString& msg, const QByteArray& data)
   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 )
+    if ( mw ) {
+       if ( argc() == 2 )
         Global::setDocument( mw, QString::fromUtf8(argv()[1]) );
 
-
-//    setMainWidget(mw); see above
     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.
 
diff --git a/noncore/applets/pcmcia/pcmcia.cpp b/noncore/applets/pcmcia/pcmcia.cpp
index 187adc6..c639002 100644
--- a/noncore/applets/pcmcia/pcmcia.cpp
+++ b/noncore/applets/pcmcia/pcmcia.cpp
@@ -215,48 +215,54 @@ void PcmciaManager::cardMessage( const QCString & msg, const QByteArray & )
             ++it;
             continue;
         }
         else
         {
             theCard = it.current();
             QString cardName = theCard->productIdentity();
             for ( int i = 0; i < nCards; ++i )
             {
                 QString cardSection = QString( "Card_%1" ).arg( i );
                 cfg.setGroup( cardSection );
                 QString name = cfg.readEntry( "name" );
                 odebug << "pcmcia: comparing card '" << cardName << "' with known card '" << name << "'" << oendl;
                 if ( cardName == name )
                 {
                     newCard = false;
                     odebug << "pcmcia: we have seen this card before" << oendl;
                     executeAction( theCard, "insert" );
                     break;
                 }
             }
             if ( !newCard ) ++it; else break;
         }
     }
+
+    if ( !theCard ) {
+	owarn << "pcmcia: Finished working through cards in PCMCIA system but I do not have a valid card handle" << oendl;
+	return;
+    }
+
     if ( newCard )
     {
         odebug << "pcmcia: unconfigured card detected" << oendl;
         QString newCardName = theCard->productIdentity();
         int result = QMessageBox::information( qApp->desktop(),
                                            tr( "PCMCIA/CF Subsystem" ),
                                            tr( "<qt>You have inserted the card<br/><b>%1</b><br/>This card is not yet configured. Do you want to configure it now?</qt>" ).arg( newCardName ),
                                            tr( "Yes" ), tr( "No" ), 0, 0, 1 );
         odebug << "pcmcia: result = " << result << oendl;
         if ( result == 0 )
         {
             configure( theCard );
         }
         else
         {
             odebug << "pcmcia: user doesn't want to configure " << newCardName << " now." << oendl;
         }
     }
     else // it's an already configured card
     {
         odebug << "pcmcia: doing nothing... why do we come here?" << oendl;
     }
 }
 
diff --git a/noncore/apps/checkbook/mainwindow.cpp b/noncore/apps/checkbook/mainwindow.cpp
index d9e2047..8e2e2e3 100644
--- a/noncore/apps/checkbook/mainwindow.cpp
+++ b/noncore/apps/checkbook/mainwindow.cpp
@@ -222,86 +222,85 @@ void MainWindow::slotNew()
         cb->setFilename( tempFilename );
         cb->write();
 
         // Add to listbox
         checkbooks->inSort( cb );
         addCheckbook( cb );
     }
     delete currcb;
 }
 
 // --- slotEdit ---------------------------------------------------------------
 void MainWindow::slotEdit()
 {
     // get name and open it
     QListViewItem *curritem = cbList->currentItem();
     if ( !curritem )
         return;
     openBook( curritem );
 }
 
 
 // --- openBook ---------------------------------------------------------------
 void MainWindow::openBook(QListViewItem *curritem)
 {
+    if ( !curritem ) return;
     // find book in List
     QString currname=curritem->text(posName);
     CBInfo *cb = checkbooks->first();
     while ( cb ) {
         if ( cb->name() == currname )
             break;
         cb = checkbooks->next();
     }
     if ( !cb ) return;
 
     //
     buildFilename( currname );
     float currbalance = cb->balance();
     bool currlock = !cb->password().isNull();
 
     if ( currlock )
     {
         Password *pw = new Password( this, tr( "Enter password" ), tr( "Please enter your password:" ) );
         if ( pw->exec() != QDialog::Accepted || pw->password != cb->password()  )
         {
             delete pw;
             return;
         }
         delete pw;
     }
 
     _cfg.setLastBook( currname );
     Checkbook *currcb = new Checkbook( this, cb, &_cfg );
     if ( QPEApplication::execDialog( currcb ) == QDialog::Accepted )
     {
         QString newname = cb->name();
         if ( currname != newname )
         {
             // Update name if changed
-            if( curritem ) {
                 curritem->setText( posName, newname );
                 cbList->sort();
-            }
             _cfg.setLastBook( newname );
 
             // Remove old file
             QFile f( tempFilename );
             if ( f.exists() )
                 f.remove();
 
             // Get new filename
             buildFilename( newname );
             cb->setFilename( tempFilename );
         }
 
         cb->write();
 
         // Update lock if changed
         if ( _cfg.getShowLocks() && !cb->password().isNull() != currlock )
         {
             if ( !cb->password().isNull() )
                 curritem->setPixmap( 0, lockIcon );
             else
                 curritem->setPixmap( 0, nullIcon );
         }
 
         // Update balance if changed
diff --git a/noncore/apps/opie-console/procctl.cpp b/noncore/apps/opie-console/procctl.cpp
index a44529b..5239e26 100644
--- a/noncore/apps/opie-console/procctl.cpp
+++ b/noncore/apps/opie-console/procctl.cpp
@@ -28,49 +28,52 @@ void ProcCtl::add(pid_t pi,  int fd ) {
     con->prev = m_last;
 
     m_last = con;
 
 }
 void ProcCtl::remove( pid_t pi ) {
     /*
      * We first check if the last item
      * is equal to  pi the we
      *
      */
     ProcContainer* con;
     if (m_last->pid == pi ) {
         con = m_last;
         m_last = con->prev;
         delete con;
         return;
     }
 
     con = m_last;
     ProcContainer* forw = 0l;
     while (con ) {
         /* remove it */
         if ( pi == con->pid ) {
+            if (forw)
             forw->prev = con->prev;
+	    else
+		forw = con->prev;
             delete con;
             return;
         }
 
         forw = con;
         con = con->prev;
     }
 
 }
 void ProcCtl::remove( ProcContainer con ) {
     remove( con.pid );
 }
 int ProcCtl::status(pid_t pid )const{
     ProcContainer *con = m_last;
     while (con) {
         if (con->pid == pid )
             return con->status;
         con = con->prev;
     }
     return -1;
 }
 void ProcCtl::signal_handler(int) {
     int status;
     signal( SIGCHLD,  signal_handler );
diff --git a/noncore/apps/tinykate/libkate/document/katedocument.cpp b/noncore/apps/tinykate/libkate/document/katedocument.cpp
index b82a86a..692fd46 100644
--- a/noncore/apps/tinykate/libkate/document/katedocument.cpp
+++ b/noncore/apps/tinykate/libkate/document/katedocument.cpp
@@ -1994,261 +1994,261 @@ void KateDocument::updateViews(KateView *exclude) {
 }
 
 QColor &KateDocument::cursorCol(int x, int y) {
   int attr;
   Attribute *a;
 
   TextLine::Ptr textLine = getTextLine(y);
   attr = textLine->getRawAttr(x);
   a = &m_attribs[attr & taAttrMask];
   if (attr & taSelected) return a->selCol; else return a->col;
 }
 
 void KateDocument::paintTextLine(QPainter &paint, int line, int xStart, int xEnd, bool showTabs)
 {
   paintTextLine (paint, line, 0, xStart, xEnd, showTabs);
 }
 
 void KateDocument::paintTextLine(QPainter &paint, int line, int y, int xStart, int xEnd, bool showTabs)
 {
   TextLine::Ptr textLine;
   int len;
   const QChar *s;
   int z, x;
   QChar ch;
-  Attribute *a = 0L;
+  Attribute *attrptr = 0L;
   int attr, nextAttr;
   int xs;
   int xc, zc;
 
   if (line > lastLine()) {
     paint.fillRect(0, y, xEnd - xStart,fontHeight, colors[0]);
     return;
   }
 
   textLine = getTextLine(line);
   len = textLine->length();
   s = textLine->getText();
 
   // skip to first visible character
   x = 0;
   z = 0;
   do {
     xc = x;
     zc = z;
     if (z == len) break;
     ch = s[z];//textLine->getChar(z);
     if (ch == '\t') {
       x += m_tabWidth - (x % m_tabWidth);
     } else {
-     a = &m_attribs[textLine->getAttr(z)];
+     attrptr = &m_attribs[textLine->getAttr(z)];
 
-   if (a->bold && a->italic)
+     if (attrptr->bold && attrptr->italic)
       x += myFontMetricsBI.width(ch);
-    else if (a->bold)
+     else if (attrptr->bold)
       x += myFontMetricsBold.width(ch);
-    else if (a->italic)
+     else if (attrptr->italic)
       x += myFontMetricsItalic.width(ch);
     else
       x += myFontMetrics.width(ch);
     }
     z++;
   } while (x <= xStart);
 
   // draw background
   xs = xStart;
   attr = textLine->getRawAttr(zc);
   while (x < xEnd)
   {
     nextAttr = textLine->getRawAttr(z);
     if ((nextAttr ^ attr) & taSelected)
     {
       if (attr & taSelected)
         paint.fillRect(xs - xStart, y, x - xs, fontHeight, colors[1]);
       else
         paint.fillRect(xs - xStart, y, x - xs, fontHeight, colors[0]);
 
       xs = x;
       attr = nextAttr;
     }
 
     if (z == len) break;
 
     ch = s[z];//textLine->getChar(z);
 
     if (ch == '\t')
       x += m_tabWidth - (x % m_tabWidth);
     else
     {
-      a = &m_attribs[textLine->getAttr(z)];
+      attrptr = &m_attribs[textLine->getAttr(z)];
 
-      if (a->bold && a->italic)
+      if (attrptr->bold && attrptr->italic)
         x += myFontMetricsBI.width(ch);
-      else if (a->bold)
+      else if (attrptr->bold)
         x += myFontMetricsBold.width(ch);
-      else if (a->italic)
+      else if (attrptr->italic)
         x += myFontMetricsItalic.width(ch);
       else
         x += myFontMetrics.width(ch);
     }
     z++;
   }
 
   if (attr & taSelected)
     paint.fillRect(xs - xStart, y, xEnd - xs, fontHeight, colors[1]);
   else
     paint.fillRect(xs - xStart, y, xEnd - xs, fontHeight, colors[0]);
 
   len = z; //reduce length to visible length
 
   // draw text
   x = xc;
   z = zc;
   y += fontAscent;// -1;
   attr = -1;
   while (z < len) {
     ch = s[z];//textLine->getChar(z);
     if (ch == '\t') {
       if (z > zc) {
         //this should cause no copy at all
         QConstString str((QChar *) &s[zc], z - zc /*+1*/);
         QString s = str.string();
         paint.drawText(x - xStart, y, s);
 
-   if (a->bold && a->italic)
+        if (attrptr && attrptr->bold && attrptr->italic)
       x += myFontMetricsBI.width(s);
-    else if (a->bold)
+        else if (attrptr && attrptr->bold)
       x += myFontMetricsBold.width(s);
-    else if (a->italic)
+        else if (attrptr && attrptr->italic)
       x += myFontMetricsItalic.width(s);
     else
       x += myFontMetrics.width(s);
       }
       zc = z +1;
 
       if (showTabs) {
         nextAttr = textLine->getRawAttr(z);
         if (nextAttr != attr) {
           attr = nextAttr;
-          a = &m_attribs[attr & taAttrMask];
+          attrptr = &m_attribs[attr & taAttrMask];
 
-          if (attr & taSelected) paint.setPen(a->selCol);
-            else paint.setPen(a->col);
+          if (attr & taSelected) paint.setPen(attrptr->selCol);
+            else paint.setPen(attrptr->col);
 
-   if (a->bold && a->italic)
+          if (attrptr->bold && attrptr->italic)
      paint.setFont(myFontBI);
-    else if (a->bold)
+          else if (attrptr->bold)
       paint.setFont(myFontBold);
-    else if (a->italic)
+          else if (attrptr->italic)
       paint.setFont(myFontItalic);
     else
       paint.setFont(myFont);
         }
 
-//        paint.drawLine(x - xStart, y -2, x - xStart, y);
-//        paint.drawLine(x - xStart, y, x - xStart + 2, y);
         paint.drawPoint(x - xStart, y);
         paint.drawPoint(x - xStart +1, y);
         paint.drawPoint(x - xStart, y -1);
       }
       x += m_tabWidth - (x % m_tabWidth);
     } else {
       nextAttr = textLine->getRawAttr(z);
       if (nextAttr != attr) {
         if (z > zc) {
           QConstString str((QChar *) &s[zc], z - zc /*+1*/);
           QString s = str.string();
           paint.drawText(x - xStart, y, s);
 
-   if (a->bold && a->italic)
+          if (attrptr->bold && attrptr->italic)
       x += myFontMetricsBI.width(s);
-    else if (a->bold)
+          else if (attrptr->bold)
       x += myFontMetricsBold.width(s);
-    else if (a->italic)
+          else if (attrptr->italic)
       x += myFontMetricsItalic.width(s);
     else
       x += myFontMetrics.width(s);
           zc = z;
         }
         attr = nextAttr;
-        a = &m_attribs[attr & taAttrMask];
+        attrptr = &m_attribs[attr & taAttrMask];
 
-        if (attr & taSelected) paint.setPen(a->selCol);
-          else paint.setPen(a->col);
+        if (attr & taSelected) paint.setPen(attrptr->selCol);
+          else paint.setPen(attrptr->col);
 
-   if (a->bold && a->italic)
+        if (attrptr->bold && attrptr->italic)
      paint.setFont(myFontBI);
-    else if (a->bold)
+        else if (attrptr->bold)
       paint.setFont(myFontBold);
-    else if (a->italic)
+        else if (attrptr->italic)
       paint.setFont(myFontItalic);
     else
       paint.setFont(myFont);
       }
     }
     z++;
   }
   if (z > zc) {
     QConstString str((QChar *) &s[zc], z - zc /*+1*/);
     paint.drawText(x - xStart, y, str.string());
   }
 }
 
 // Applies the search context, and returns whether a match was found. If one is,
 // the length of the string matched is also returned.
 bool KateDocument::doSearch(SConfig &sc, const QString &searchFor) {
   int line, col;
   int searchEnd;
   int bufLen, tlen;
   QChar *t;
   TextLine::Ptr textLine;
   int pos, newPos;
 
   if (searchFor.isEmpty()) return false;
 
   bufLen = 0;
   t = 0L;
 
   line = sc.cursor.y;
   col = sc.cursor.x;
   if (!(sc.flags & KateView::sfBackward)) {
     //forward search
     if (sc.flags & KateView::sfSelected) {
       if (line < selectStart) {
         line = selectStart;
         col = 0;
       }
       searchEnd = selectEnd;
     } else searchEnd = lastLine();
 
     while (line <= searchEnd) {
       textLine = getTextLine(line);
       tlen = textLine->length();
       if (tlen > bufLen) {
         delete [] t;
         bufLen = (tlen + 255) & (~255);
         t = new QChar[bufLen];
-      }
+      } else if (!t)
+	  t = new QChar[bufLen];
+
       memcpy(t, textLine->getText(), tlen*sizeof(QChar));
       if (sc.flags & KateView::sfSelected) {
         pos = 0;
         do {
           pos = textLine->findSelected(pos);
           newPos = textLine->findUnselected(pos);
           memset(&t[pos], 0, (newPos - pos)*sizeof(QChar));
           pos = newPos;
         } while (pos < tlen);
       }
 
       QString text(t, tlen);
       if (sc.flags & KateView::sfWholeWords) {
         // Until the end of the line...
         while (col < tlen) {
           // ...find the next match.
           col = sc.search(text, col);
           if (col != -1) {
             // Is the match delimited correctly?
             if (((col == 0) || (!m_highlight->isInWord(t[col]))) &&
               ((col + sc.matchedLength == tlen) || (!m_highlight->isInWord(t[col + sc.matchedLength])))) {
               goto found;
             }
             else {
@@ -2267,49 +2267,50 @@ bool KateDocument::doSearch(SConfig &sc, const QString &searchFor) {
         col = sc.search(text, col);
         if (col != -1)
           goto found;
       }
       col = 0;
       line++;
     }
   } else {
     // backward search
     if (sc.flags & KateView::sfSelected) {
       if (line > selectEnd) {
         line = selectEnd;
         col = -1;
       }
       searchEnd = selectStart;
     } else searchEnd = 0;
 
     while (line >= searchEnd) {
       textLine = getTextLine(line);
       tlen = textLine->length();
       if (tlen > bufLen) {
         delete [] t;
         bufLen = (tlen + 255) & (~255);
         t = new QChar[bufLen];
-      }
+      } else if (!t)
+        t = new QChar[bufLen];
       memcpy(t, textLine->getText(), tlen*sizeof(QChar));
       if (sc.flags & KateView::sfSelected) {
         pos = 0;
         do {
           pos = textLine->findSelected(pos);
           newPos = textLine->findUnselected(pos);
           memset(&t[pos], 0, (newPos - pos)*sizeof(QChar));
           pos = newPos;
         } while (pos < tlen);
       }
 
       if (col < 0 || col > tlen) col = tlen;
 
       QString text(t, tlen);
       if (sc.flags & KateView::sfWholeWords) {
         // Until the beginning of the line...
         while (col >= 0) {
           // ...find the next match.
           col = sc.search(text, col);
           if (col != -1) {
             // Is the match delimited correctly?
             if (((col == 0) || (!m_highlight->isInWord(t[col]))) &&
               ((col + sc.matchedLength == tlen) || (!m_highlight->isInWord(t[col + sc.matchedLength])))) {
               goto found;
diff --git a/noncore/settings/sysinfo/devicesinfo.cpp b/noncore/settings/sysinfo/devicesinfo.cpp
index 164d608..428cfd4 100644
--- a/noncore/settings/sysinfo/devicesinfo.cpp
+++ b/noncore/settings/sysinfo/devicesinfo.cpp
@@ -244,49 +244,49 @@ void UsbCategory::populate()
     int usbcount = 0;
     UsbDevice* lastDev = 0;
     UsbDevice* dev = 0;
     while ( !usbinfo.atEnd() )
     {
         QString line = usbinfo.readLine();
         odebug << "got line '" << line << "'" << oendl;
         if ( line.startsWith( "T:" ) )
         {
             sscanf(line.local8Bit().data(), "T:  Bus=%2d Lev=%2d Prnt=%2d Port=%d Cnt=%2d Dev#=%3d Spd=%3f MxCh=%2d", &_bus, &_level, &_parent, &_port, &_count, &_device, &_speed, &_channels);
 
             if ( !_level )
             {
                 odebug << "adding new bus" << oendl;
                 dev = new UsbDevice( this, QString( "Generic USB Hub Device" ) );
                 lastDev = dev;
             }
             else
             {
                 odebug << "adding new dev" << oendl;
                 dev = new UsbDevice( lastDev, QString( "Generic USB Hub Device" ) );
                 lastDev = dev;
             }
         }
-        else if ( line.startsWith( "S:  Product" ) )
+        else if ( dev && line.startsWith( "S:  Product" ) )
         {
             int dp = line.find( '=' );
             dev->setText( 0, dp != -1 ? line.right( line.length()-1-dp ) : "<unknown>" );
         }
         else
         {
             continue;
         }
     }
 }
 
 
 //=================================================================================================
 Device::Device( Category* parent, const QString& name )
        :OListViewItem( parent, name )
 {
     devinfo = static_cast<QWidget*>( listView()->parent() );
 }
 
 Device::Device( Device* parent, const QString& name )
        :OListViewItem( parent, name )
 {
     devinfo = static_cast<QWidget*>( listView()->parent() );
 }
diff --git a/noncore/todayplugins/stockticker/libstocks/http.c b/noncore/todayplugins/stockticker/libstocks/http.c
index 2f38f8a..cc78ab7 100644
--- a/noncore/todayplugins/stockticker/libstocks/http.c
+++ b/noncore/todayplugins/stockticker/libstocks/http.c
@@ -189,49 +189,49 @@ libstocks_return_code http_get(char *http_file, char *http_server, char **pdata)
         free(data);
         data = temp;
       }
   }
     }
   
   /* close socket */
 #ifdef __UNIX__
   close(s);
 #elif __WINDOWS__
   closesocket(s);
 #endif
 
 #ifdef DEBUG
   printf("%s\n", data);
 #endif
 
   /* get headers to test status line */
   /* and to split headers and content */
   
   temp = data;
   header_founded = 0;
   while( !header_founded )
     {
-      if (*temp==0) return ERRRHEA;
+      if (!temp || *temp==0) return ERRRHEA;
 
       if( *temp==0x0A )
   {
     /* test if it is the header end */
     temp ++;
     if (*temp == 0x0D) temp++;
     if (*temp == 0x0A) header_founded = 1;
   }
       else
   temp++;
     }
 
   *temp = 0;
   temp++;
 
   sscanf(data,"HTTP/1.%*d %03d",&error_code);
   
   if (error_code != 200)
     {
 #ifdef DEBUG
       printf(" HTTP error code : %d\n", error_code);
 #endif
       free(data);
       return ERRPAHD;