X-Git-Url: https://git.verplant.org/?a=blobdiff_plain;f=src%2Fvideo%2Frenderer.hpp;h=2839492ea85979b06f78eb4e7ffb1569999acab7;hb=4f423b9bbb6fa694b8c6bcc338e069aad45db3e3;hp=777eefdb84ab11e812292b8deb82bbe99c2bfd3f;hpb=2ee1a7c6335e6055268134890c8fe294e19af695;p=supertux.git

diff --git a/src/video/renderer.hpp b/src/video/renderer.hpp
index 777eefdb8..2839492ea 100644
--- a/src/video/renderer.hpp
+++ b/src/video/renderer.hpp
@@ -25,7 +25,7 @@
 #include <memory>
 
 #include <stdint.h>
-
+#include <assert.h>
 #include <SDL_video.h>
 
 #include "glutil.hpp"
@@ -56,7 +56,7 @@ public:
   virtual void resize(int w, int h) = 0;
   virtual void apply_config() = 0;
 
-  static Renderer* instance() { return instance_; }
+  static Renderer* instance() { assert(instance_); return instance_; }
   
 protected:
   static Renderer* instance_;