Change how checking for missing values works.

[pspp] / src / ui / gui / psppire-dialog-action-indep-samps.c

diff --git a/src/ui/gui/psppire-dialog-action-indep-samps.c b/src/ui/gui/psppire-dialog-action-indep-samps.c
index faea2b41414975e1bf0519c4614e3de0bdb7fcd9..31b8cc78c98ede6dc62ccb3f75bc7e57ca243e98 100644 (file)
--- a/src/ui/gui/psppire-dialog-action-indep-samps.c
+++ b/src/ui/gui/psppire-dialog-action-indep-samps.c
@@ -74,6 +74,7 @@ refresh (PsppireDialogAction *da)
       value_destroy (&act->cut_point, width);
       value_destroy (&act->grp_val[0], width);
       value_destroy (&act->grp_val[1], width);
+      var_unref (act->grp_var);
       act->grp_var = NULL;
       act->grp_var_width = -1;
     }
@@ -104,7 +105,7 @@ value_entry_contains_invalid (PsppireValueEntry *ve, const struct variable *var)
 
       if (psppire_value_entry_get_value (ve, &val, width))
        {
-         if (var_is_value_missing (var, &val, MV_SYSTEM))
+         if (var_is_value_missing (var, &val) == MV_SYSTEM)
            {
              result = TRUE;
            }
@@ -243,7 +244,7 @@ on_grp_var_change (GtkEntry *entry, PsppireDialogActionIndepSamps *act)
   PsppireDialogAction *da = PSPPIRE_DIALOG_ACTION (act);
   const gchar *text = gtk_entry_get_text (entry);
 
-  const struct variable *v = da->dict ? psppire_dict_lookup_var (da->dict, text) : NULL;
+  struct variable *v = da->dict ? psppire_dict_lookup_var (da->dict, text) : NULL;
 
   gtk_widget_set_sensitive (act->define_groups_button, v != NULL);
 
@@ -276,7 +277,11 @@ on_grp_var_change (GtkEntry *entry, PsppireDialogActionIndepSamps *act)
         }
     }
 
-  act->grp_var = v;
+  struct variable *old_grp_var = act->grp_var;
+  if (v)
+    act->grp_var = var_ref (v);
+  if (old_grp_var)
+    var_unref (old_grp_var);
   act->grp_var_width = v ? var_get_width (v) : -1;
 }