1 files changed, 5 insertions, 1 deletions
diff --git a/WebCore/platform/graphics/cairo/ImageCairo.cpp b/WebCore/platform/graphics/cairo/ImageCairo.cpp
index 7c34e6f..c8c992e 100644
--- a/WebCore/platform/graphics/cairo/ImageCairo.cpp
+++ b/WebCore/platform/graphics/cairo/ImageCairo.cpp
@@ -157,11 +157,15 @@ void Image::drawPattern(GraphicsContext* context, const FloatRect& tileRect, con
     if (!image) // If it's too early we won't have an image yet.
         return;
 
+    // Avoid NaN
+    if (!isfinite(phase.x()) || !isfinite(phase.y()))
+       return;
+
     cairo_t* cr = context->platformContext();
     context->save();
 
     IntRect imageSize = enclosingIntRect(tileRect);
-    OwnPtr<ImageBuffer> imageSurface = ImageBuffer::create(imageSize.size(), false);
+    OwnPtr<ImageBuffer> imageSurface = ImageBuffer::create(imageSize.size());
 
     if (!imageSurface)
         return;