From cbb40d0662c5555aadc10d96e7d0998fd713a1f8 Mon Sep 17 00:00:00 2001
From: artemp <artem@mapnik.org>
Date: Fri, 2 Oct 2015 12:47:57 +0100
Subject: [PATCH] raster.input - throw if reader can't be created

---
 plugins/input/raster/raster_datasource.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/plugins/input/raster/raster_datasource.cpp b/plugins/input/raster/raster_datasource.cpp
index 96f59387d..4d8b5f99a 100644
--- a/plugins/input/raster/raster_datasource.cpp
+++ b/plugins/input/raster/raster_datasource.cpp
@@ -87,6 +87,7 @@ raster_datasource::raster_datasource(parameters const& params)
     else //bounding box from image_reader
     {
         std::unique_ptr<image_reader> reader(mapnik::get_image_reader(*file));
+        if (!reader) throw datasource_exception("Raster Plugin: failed to create reader for " + *file);
         auto bbox = reader->bounding_box();
         if (bbox)
         {