From 1b409fff8b3cd1cf63e990dcfeaaadf0100bd7f6 Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Thu, 30 Jun 2016 11:12:45 +0100
Subject: [PATCH] Added handling of return value

---
 src/osgPlugins/stl/ReaderWriterSTL.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/osgPlugins/stl/ReaderWriterSTL.cpp b/src/osgPlugins/stl/ReaderWriterSTL.cpp
index 883c1219f..95721efc9 100644
--- a/src/osgPlugins/stl/ReaderWriterSTL.cpp
+++ b/src/osgPlugins/stl/ReaderWriterSTL.cpp
@@ -407,7 +407,10 @@ bool fileComesFromMagics(FILE *fp, osg::Vec4& magicsColor)
     size_t bytes_read = fread((void*) &header, sizeof(header), 1, fp);
     if (bytes_read!=sizeof(header)) return false;
 
-    ::fseek(fp, sizeof_StlHeader, SEEK_SET);
+    if (::fseek(fp, sizeof_StlHeader, SEEK_SET)!=0)
+    {
+        return false;
+    }
 
     std::string magicsColorPattern ("COLOR=");
     std::string headerStr = std::string(header);