ios.cc query

[David Edelsohn]

In the following code, why does _S_synced_with_stdio have ios_base::Init::
prepended while _S_ios_base_init does not?

  int ios_base::Init::_S_ios_base_init = 0;
  bool ios_base::Init::_S_synced_with_stdio = true;

...

  ios_base::Init::Init()
  {
    if (_S_ios_base_init == 0)
      {
        // Standard streams default to synced with "C" operations.
        ios_base::Init::_S_synced_with_stdio = true;

Thanks, David