About rvalue ref.

[phisiart]

@bechob is facing the following behavior:

Suppose you have the following function definition.

void Insert(std::unique_ptr<planner::AbstractPlan> &&plan) { ... }

std::unique_ptr<planner::AbstractPlan> plan = ...;
Insert(plan);
plan->SomeMethod(); // ok

std::unique_ptr<planner::AbstractPlan> plan = ...;
Insert(std::move(plan));
plan->SomeMethod(); // not ok, plan is now nullptr