rem: text_comparison -> text = g_strdup (text);
add: if ( text ) text_comparison -> text = g_strdup (text); else text_comparison -> text = NULL;
context: gboolean gsb_data_report_text_comparison_set_text ( gint text_comparison_number,						    const gchar *text){    struct_text_comparison *text_comparison;    text_comparison = gsb_data_report_text_comparison_get_struct_by_no (text_comparison_number);    if ( !text_comparison )	return FALSE;    text_comparison -> text = g_strdup (text);    return TRUE;}