20.7.2.2.1 shared_ptr constructors

template<class Y, class D> shared_ptr(Y* p, D d);
8. ...The copy constructor and destructor of D shall not throw exceptions.
　The expression d(p) shall be well formed, shall have well defined behavior,
　and shall not throw exceptions.

なので、例外投げる削除子を shared_ptr に使ってはいけない。