Jonathan Wakely 78a8b676f1 Add std::get_deleter overload with correct signature
* include/bits/shared_ptr.h (get_deleter): Add overload matching
	standard signature.
	* include/bits/shared_ptr_base.h (__shared_ptr): Declare new
	get_deleter overload as a friend.
	* testsuite/20_util/shared_ptr/misc/get_deleter.cc: New.

From-SVN: r249267
2017-06-16 16:20:14 +01:00
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