Fixed crash when trying to get the label of a non-existant variable.

[pspp-builds.git] / src / ui / gui / compute-dialog.c

diff --git a/src/ui/gui/compute-dialog.c b/src/ui/gui/compute-dialog.c
index 3e8677ba48fd95863555e9bb84de59ef30b7146f..9eafc2c2b84e3be47dab73660a088fbc9c4e17e7 100644 (file)
--- a/src/ui/gui/compute-dialog.c
+++ b/src/ui/gui/compute-dialog.c
@@ -325,10 +325,15 @@ on_expression_toggle (GtkToggleButton *button, gpointer data)
        (GTK_ENTRY (get_widget_assert (cd->xml, "compute-entry1")));
 
       target_var = psppire_dict_lookup_var (cd->dict, target_name);
-      label = var_get_label (target_var);
+      if ( target_var )
+       {
+         label = var_get_label (target_var);
 
-      if ( label )
-       gtk_entry_set_text (GTK_ENTRY (entry), label);
+         if ( label )
+           gtk_entry_set_text (GTK_ENTRY (entry), label);
+       }
+      else
+       gtk_entry_set_text (GTK_ENTRY (entry), "");
 
       gtk_widget_set_sensitive (entry, TRUE);
     }