gui: Fix crash in Paired T-Test dialog on selecting first variable.

When a variable is moved into the list of selected variables in the
Paired T-Test dialog, that row of the treeview has one nonnull
variable and one null variable.  Calling var_get_name(NULL) causes a
segfault.

I'm not certain that this is the correct fix, but it fixes the
segfault.  The missing variable is now shown as <unset> until a second
variable is moved into the treeview.

Bug #32958.

diff --git a/src/ui/gui/psppire-var-view.c b/src/ui/gui/psppire-var-view.c
index 73bd9d8de225cf33fbe86e5768486e6f9d1edfb9..a840539dcba38087d037fdc56235b9bee8460d74 100644 (file)
--- a/src/ui/gui/psppire-var-view.c
+++ b/src/ui/gui/psppire-var-view.c
@@ -1,5 +1,5 @@
 /* PSPPIRE - a graphical user interface for PSPP.
-   Copyright (C) 2009  Free Software Foundation
+   Copyright (C) 2009, 2011  Free Software Foundation
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -141,7 +141,7 @@ display_cell_var_name (GtkTreeViewColumn *tree_column,
 
   g_value_unset (&value);
 
-  g_object_set (cell, "text", var_get_name (var), NULL);
+  g_object_set (cell, "text", var ? var_get_name (var) : "<unset>", NULL);
 }