From fe25b2961b688e5374a0eea05310932958dd97a3 Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Wed, 21 Dec 2016 11:40:16 +0000
Subject: [PATCH] From Andreas Ekstrand, "he attached ESRIShape.cpp contains a
 small fix in parsing of PointZ features, now correctly comparing with header
 content length which is defined in 16-bit words.

This should have been fixed in my old submission from 2012 but was probably overlooked due to an alternative way of comparing to a fix number for this feature type.

Without this fix, the plugin will only read one PointZ feature even if multiple features exist."
---
 src/osgPlugins/shp/ESRIShape.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/osgPlugins/shp/ESRIShape.cpp b/src/osgPlugins/shp/ESRIShape.cpp
index 8ffd4dcd4..f5ece532f 100644
--- a/src/osgPlugins/shp/ESRIShape.cpp
+++ b/src/osgPlugins/shp/ESRIShape.cpp
@@ -810,7 +810,7 @@ bool PointZ::read( int fd )
         return false;
 
     // Sometimes, M field is not supplied
-    if( rh.contentLength >= 18 )
+    if( rh.contentLength*2 >= 18 )
         if( readVal<Double>( fd, m, LittleEndian ) == false )
             return false;