2004-11-02  Benjamin Kosnik  <bkoz@redhat.com>
  	    Lothar Werzinger  <lothar@xcerla.com>

	PR libstdc++/17627
	* src/debug.cc: Include concurrence, use mutexes.
	(_Safe_iterator_base::_M_attach): Here.
	(_Safe_iterator_base::_M_detach): Here.

Co-Authored-By: Lothar Werzinger <lothar@xcerla.com>

From-SVN: r90004