PR libstdc++/55320
	* include/std/functional (function::function(F)): Set _M_manager after
	operations that could throw.
	(_Function_base::_Ref_manager::_M_init_functor): Use addressof.
	* include/tr1/functional
	(_Function_base::_Ref_manager::_M_init_functor): Use addressof.
	(_Function_base::_Base_manager::_M_get_pointer): Likewise.
	* testsuite/20_util/function/cons/55320.cc: New.
	* testsuite/20_util/function/cons/addressof.cc: New.
	* testsuite/20_util/function/cons/callable.cc: Remove header.
	* testsuite/20_util/bind/ref_neg.cc: Adjust dg-error line numbers.
	* testsuite/tr1/3_function_objects/function/10.cc: New.

From-SVN: r193514