Does adding a reference to a shared ptr increase the reference count

Question

Suppose I have a method as such ``` void foo(const boost::shared_ptr<Pfoo>& rx) { myvector->push_back(rx); } ``` I read that when a boost::shared_ptr is passed as a reference its reference count does not increase. Now what would happen in the above scenario if the actual ptr ran out of scope ?

Accepted Answer

When pass pointer by reference - no copy occured, no reference-counter incrementing.

```
myvector->push_back(rx);
```

Here, in vector will be pushed copy of `rx`, not `rx`, so, reference-counter will be incremented.

Does adding a reference to a shared ptr increase the reference count

Solution

Problem