Consider the following code:

```
struct S
{
  int x;
  void f()
  {
    auto l = [&](){ x = 42; }; //this is implicitly captured here
  }
};

```

§5.1.2/14 states:

> 
> An entity is captured by copy if it is implicitly captured and the capture-default is = or if it is explicitly captured with a capture that does not include an &.
> 
> 
> 

Hence I conclude, that `this` is not *captured by copy*. But then by §5.1.2/15:

> 
> An entity is captured by reference if it is implicitly or explicitly captured but not captured by copy. It is unspecified whether additional unnamed non-static data members are declared in the closure type for entities captured by reference.
> 
> 
> 

`this` is *captured by reference*. But now §5.1.2/17 states:

> 
> [...] If `this` is captured, each odr-use of `this` is transformed into an access to the corresponding unnamed data member of the closure type, [...]
> 
> 
> 

As far as I understand, this implies that there must be an unnamed data member in the closure type corresponding to the `this` pointer. But since `this` is *captured by reference* the standard doesn't demand that such a member exists. What do I get wrong?