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, 32 insertions, 31 deletions

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;