1 files changed, 8 insertions, 2 deletions
diff --git a/src/3rdparty/webkit/WebCore/html/canvas/CanvasRenderingContext2D.cpp b/src/3rdparty/webkit/WebCore/html/canvas/CanvasRenderingContext2D.cpp
index 8add19c..823ab59 100644
--- a/src/3rdparty/webkit/WebCore/html/canvas/CanvasRenderingContext2D.cpp
+++ b/src/3rdparty/webkit/WebCore/html/canvas/CanvasRenderingContext2D.cpp
@@ -209,7 +209,7 @@ float CanvasRenderingContext2D::lineWidth() const
 
 void CanvasRenderingContext2D::setLineWidth(float width)
 {
-    if (!(width > 0))
+    if (!(isfinite(width) && width > 0))
         return;
     state().m_lineWidth = width;
     GraphicsContext* c = drawingContext();
@@ -259,7 +259,7 @@ float CanvasRenderingContext2D::miterLimit() const
 
 void CanvasRenderingContext2D::setMiterLimit(float limit)
 {
-    if (!(limit > 0))
+    if (!(isfinite(limit) && limit > 0))
         return;
     state().m_miterLimit = limit;
     GraphicsContext* c = drawingContext();
@@ -275,6 +275,8 @@ float CanvasRenderingContext2D::shadowOffsetX() const
 
 void CanvasRenderingContext2D::setShadowOffsetX(float x)
 {
+    if (!isfinite(x))
+        return;
     state().m_shadowOffset.setWidth(x);
     applyShadow();
 }
@@ -286,6 +288,8 @@ float CanvasRenderingContext2D::shadowOffsetY() const
 
 void CanvasRenderingContext2D::setShadowOffsetY(float y)
 {
+    if (!isfinite(y))
+        return;
     state().m_shadowOffset.setHeight(y);
     applyShadow();
 }
@@ -297,6 +301,8 @@ float CanvasRenderingContext2D::shadowBlur() const
 
 void CanvasRenderingContext2D::setShadowBlur(float blur)
 {
+    if (!(isfinite(blur) && blur >= 0))
+        return;
     state().m_shadowBlur = blur;
     applyShadow();
 }