That causes a sigsegfault on DMD without any error message
```d
public struct Foo {
    private int values;
    alias values this;
}

void main()
{
    writeln(Foo());
}
```

If the values variable is changed to "values2", then, a compiler error is being presented.

The mix of private and that special name causes an error, @jrfondren did a brute force test case for every word that happens: https://gist.github.com/jrfondren/78b5d366e37a6a9c4b91e37751f25789

@Mayonix helped me tracking that bug too by getting to the conclusion 
"So when you name a private field some function defined in object.d, alias this it, and then pass an object to a function in a different module which attempts to access the alias this, it can't access the field in question because it's private, so instead it finds the function defined in object.d,"