symbol_free (void *ptr)
{
  symbol *sym = (symbol *)ptr;
  if (!sym->is_alias)
    sym_content_free (sym->content);
  free (sym);

}
symbol_free (void *ptr)
{
  symbol *sym = (symbol *)ptr;
  if (!sym->is_alias)
    sym_content_free (sym->content);
  free (sym);

}