ext/libsvm/libsvm.c in rb-libsvm-1.3.1 vs ext/libsvm/libsvm.c in rb-libsvm-1.4.0

@@ -488,17 +488,22 @@
  *
  * This load a model from file `filename`. Format is the LIBSVM
  * internal file representation of the model.
  *
  * @param filename [String] name of the model file
+ * @raise [IOError] if the model can't be loaded,
+ *   e.g. because the model path doesn't point to a model
  * @return [Libsvm::Model] the model
  */
 static VALUE cModel_class_load(VALUE cls, VALUE filename)
 {
   struct svm_model *model;
   char *path;
   path = StringValueCStr(filename);
   model = svm_load_model(path);
+  if(model == NULL) {
+    rb_raise(rb_eIOError, "unable to load model from file: \"%s\"", path);
+  }
   return Data_Wrap_Struct(cModel, 0, model_free, model);
 }
 
 /* call-seq:
  *   Model.cross_validation(problem, parameter, num_fold)