Reading the documentation on RefCounted I get the impression that
the following can lead to memory errors. Could someone explain
exactly how that could happen? I suppose that problem would be
the call something to do with front?
```
private struct RefCountedRangeReturnType(R)
{
import std.typecons : RefCounted;
private RefCounted!R r;
auto empty() { return r.refCountedPayload.empty; }
auto front() { return r.refCountedPayload.front; }
void popFront() { r.refCountedPayload.popFront; }
auto save() { return
typeof(this)(RefCounted!R(r.refCountedPayload.save)); }
}
auto refCountedRange(R)(R r)
{
import std.typecons : RefCounted;
return RefCountedRangeReturnType!R(RefCounted!R(r));
}
```
