From bdd6817cee9bb3000f3ba6d4308b650052ffa357 Mon Sep 17 00:00:00 2001
From: Cai Shanli <sufulow@gmail.com>
Date: Mon, 3 Jul 2017 16:24:01 +0800
Subject: [PATCH] fix StatsHandler crush on windows

change static_cast to dynamic_cast to avoid type cast error
---
 src/osgViewer/StatsHandler.cpp | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/osgViewer/StatsHandler.cpp b/src/osgViewer/StatsHandler.cpp
index 6b56a62db..48c514d84 100644
--- a/src/osgViewer/StatsHandler.cpp
+++ b/src/osgViewer/StatsHandler.cpp
@@ -767,8 +767,11 @@ struct BlockDrawCallback : public virtual osg::Drawable::DrawCallback
 
         vertices->dirty();
 
-        osg::DrawArrays* drawArrays = static_cast<osg::DrawArrays*>(geom->getPrimitiveSet(0));
-        drawArrays->setCount(vi);
+        osg::DrawArrays* drawArrays = dynamic_cast<osg::DrawArrays*>(geom->getPrimitiveSet(0));
+        if(drawArrays)
+        {
+            drawArrays->setCount(vi);
+        }
 
         drawable->drawImplementation(renderInfo);
     }