[[ Bug ]] Overflow in dilateXY.

runrevmark · runrevmark · commit da253afd999f · 2014-06-24T16:30:37.000+01:00
diff --git a/libgraphics/src/spread.cpp b/libgraphics/src/spread.cpp
@@ -261,7 +261,10 @@ void dilateDistanceXY(const uint8_t *src, uint8_t *dst, int xradius, int yradius
             //      Avoids excessive processing for rows of non-zero pixels
             x = dnext;
             next = next + 1;
-            while (next < width && sptr[next + 1] != 0)
+            
+            // MW-2014-06-24: [[ Bug ]] Only loop up to (width - 1), otherwise we get
+            //   an access overflow.
+            while (next < (width - 1) && sptr[next + 1] != 0)
             {
                 xdptr[x] = 0;
                 x++, next++;
