Added some simulated data and a hidden output in spell-marker to double-check the results.

src/bayes/cli.cc

@@ -518,6 +518,17 @@ arguments = {
 };
 
 
+constraint_t<bn_settings_t> checks[] = {
+        {
+                "No marker to work on.",
+                "Specify at least one genotype data file",
+                CONSTRAINT_PREDICATE(bn_settings_t) {
+                    return s->marker_names.size() > 0;
+                }
+        },
+};
+
+
 argument_parser<bn_settings_t> arg_map(arguments);
 
 
@@ -540,6 +551,7 @@ bn_settings_t* bn_settings_t::from_args(int argc, const char** argv)
         for (const auto& kv: ret->observed_mark) {
             ret->marker_observation_specs[kv.second.format_name] = marker_obs_formats::get_format(ret->pedigree, kv.second.format_name);
         }
+        constraint_t<bn_settings_t>::check(ret);
         if (ret->output_mode == 0) {
             ret->output_mode = bn_settings_t::OutputPopData;
         }

src/bayes/main.cc

@@ -33,7 +33,8 @@ int main(int argc, const char** argv)
     msg_handler_t::debug_enabled() = false;
     bn_settings_t* settings = NULL;
     try {
-         settings = bn_settings_t::from_args(argc, argv);
+        settings = bn_settings_t::from_args(argc, argv);
+        msg_handler_t::check(true);
     } catch (file::error& fe) {
         MSG_ERROR("An error happened while reading input files. " << fe.what(), "");
         return -1;