From a408a84fb01af62ca382cec9083cdf0cb28022ef Mon Sep 17 00:00:00 2001
From: artemp <artem@mapnik.org>
Date: Mon, 19 Jan 2015 22:04:21 +0100
Subject: [PATCH] ignore invalid bounding boxes from "geometry": null

---
 include/mapnik/json/extract_bounding_box_grammar.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/mapnik/json/extract_bounding_box_grammar.hpp b/include/mapnik/json/extract_bounding_box_grammar.hpp
index 6395e0797..f2638fec6 100644
--- a/include/mapnik/json/extract_bounding_box_grammar.hpp
+++ b/include/mapnik/json/extract_bounding_box_grammar.hpp
@@ -77,7 +77,7 @@ struct push_box_impl
     template <typename T0, typename T1, typename T2, typename T3>
     void operator() (T0 & boxes, T1 const& begin, T2 const& box, T3 const& range) const
     {
-        boxes.emplace_back(box, std::make_pair(std::distance(begin, range.begin()), std::distance(range.begin(), range.end())));
+        if (box.valid()) boxes.emplace_back(box, std::make_pair(std::distance(begin, range.begin()), std::distance(range.begin(), range.end())));
     }
 };