re PR libstdc++/47354 (bitmap_allocator free_list::_M_get never locks mutex)

2011-01-19  Graham Reed  <greed@pobox.com>

	PR libstdc++/47354
	* src/bitmap_allocator.cc (free_list::_M_get): Lock mutex.

From-SVN: r168980

libstdc++-v3/ChangeLog

+2011-01-19  Graham Reed  <greed@pobox.com>
+
+	PR libstdc++/47354
+	* src/bitmap_allocator.cc (free_list::_M_get): Lock mutex.
+
 2011-01-18  Benjamin Kosnik  <bkoz@redhat.com>
 
 	* doc/xml/images/confdeps.png: Regenerate.

libstdc++-v3/src/bitmap_allocator.cc

@@ -49,6 +49,7 @@ _GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx)
   {
 #if defined __GTHREADS
     __mutex_type& __bfl_mutex = _M_get_mutex();
+    __bfl_mutex.lock();
 #endif
     const vector_type& __free_list = _M_get_free_list();
     using __gnu_cxx::__detail::__lower_bound;