From b8d1e4d2f68f294b42c988fb1db18ba1544ed6e2 Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Thu, 23 Jun 2016 16:52:16 +0100
Subject: [PATCH] Added minimum of 1 to make sure numProcessors is always valid

---
 src/osgViewer/CompositeViewer.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/osgViewer/CompositeViewer.cpp b/src/osgViewer/CompositeViewer.cpp
index 8104d481e..bbcf24bd5 100644
--- a/src/osgViewer/CompositeViewer.cpp
+++ b/src/osgViewer/CompositeViewer.cpp
@@ -654,7 +654,7 @@ void CompositeViewer::realize()
 
     if (osg::DisplaySettings::instance()->getCompileContextsHint())
     {
-        int numProcessors = OpenThreads::GetNumberOfProcessors();
+        int numProcessors = osg::minimum(1, OpenThreads::GetNumberOfProcessors());
         int processNum = 0;
 
         for(unsigned int i=0; i<= osg::GraphicsContext::getMaxContextID(); ++i)