When I try to generate something like this

{ "a" : {} }

I got segfault.

My code:

  JsonBuilder    *builder;
  JsonGenerator  *generator;
  gchar          *json = NULL;

    builder = json_builder_new();

    json_builder_begin_object(builder);

    json_builder_set_member_name (builder, "a");
    json_builder_begin_object(builder);
    json_builder_end_object(builder);


    json_builder_end_object(builder);

    generator = json_generator_new();
    json_generator_set_root(generator, json_builder_get_root(builder));
    json = json_generator_to_data(generator, NULL);


I use the following version from ubuntu 11.04:

libjson-glib-1.0-0                    0.12.2-0ubuntu1