Is there a safe navigation operator for C++?

In Modern C++, is there a way to do safe navigation?

For example, instead of doing...

if (p && p->q && p->q->r)
    p->q->r->DoSomething();

...having a succinct syntax by using some sort of short-circuiting smart pointer, or some other kind of syntax leveraging operator overloading, or something in the Standard C++ Library, or in Boost.

p?->q?->r?->DoSomething(); // C++ pseudo-code.

Context is C++17 in particular.