From 8c03ea3d68dcd4b353f92372cafc67698f6ed528 Mon Sep 17 00:00:00 2001
From: artemp <artem@mapnik.org>
Date: Mon, 12 May 2014 10:14:10 +0100
Subject: [PATCH] mapnik::value - return 'infinity' if rhs == 0 to avoid
 division by zero

---
 include/mapnik/value.hpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/include/mapnik/value.hpp b/include/mapnik/value.hpp
index 18979d8df..631f2baa3 100644
--- a/include/mapnik/value.hpp
+++ b/include/mapnik/value.hpp
@@ -495,6 +495,7 @@ struct div: public boost::static_visitor<V>
     template <typename T>
     value_type operator() (T lhs, T rhs) const
     {
+        if (rhs == 0) return std::numeric_limits<value_type>::infinity();
         return lhs / rhs;
     }
 
@@ -513,11 +514,13 @@ struct div: public boost::static_visitor<V>
 
     value_type operator() (value_double lhs, value_integer rhs) const
     {
+        if (rhs == 0) return std::numeric_limits<value_type>::infinity();
         return lhs / rhs;
     }
 
     value_type operator() (value_integer lhs, value_double rhs) const
     {
+        if (rhs == 0) return std::numeric_limits<value_type>::infinity();
         return lhs / rhs;
     }
 };