X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=tools%2Fminiswig%2Fcreate_wrapper.cpp;h=29f35b2a18b1f0543e77f8dab0647fd18d57a193;hb=4eff38d2a777e7a889428eadbef0d1eae7d35db0;hp=a316631669000b90323ccec037fb56534ce6a89f;hpb=7baf00e0fa05776566327eeb9628f8a2869e8479;p=supertux.git

diff --git a/tools/miniswig/create_wrapper.cpp b/tools/miniswig/create_wrapper.cpp
index a31663166..29f35b2a1 100644
--- a/tools/miniswig/create_wrapper.cpp
+++ b/tools/miniswig/create_wrapper.cpp
@@ -304,7 +304,7 @@ WrapperCreator::create_function_wrapper(Class* _class, Function* function)
     // retrieve pointer to class instance
     if(_class != 0 && function->type != Function::CONSTRUCTOR) {
         out << ind << "SQUserPointer data;\n";
-        out << ind << "if(SQ_FAILED(sq_getinstanceup(vm, 1, &data, 0))) {\n";
+        out << ind << "if(SQ_FAILED(sq_getinstanceup(vm, 1, &data, 0)) || !data) {\n";
         out << ind << ind << "sq_throwerror(vm, _SC(\"'" << function->name << "' called without instance\"));\n";
         out << ind << ind << "return SQ_ERROR;\n";
         out << ind << "}\n";