[Boost-users] [smart_ptr] make_shared imposes const ref.

Why is make_shared declared as template shared_ptr<T> make_shared( Arg1 const & arg1 ); rather than template shared_ptr<T> make_shared( Arg1 arg1 ); since the effect is that if you have a constructor that takes non-const references you cannot use make_shared( ) on it. Thx, - Rob.