Hello UB-Experts,

 

as far as I can see the following (static_cast) is UB:

 

struct B {

  int i;

};

 

struct D : B {

  void foo() { /* access B::i */ }

};

 

B b;

static_cast<D&>(b).foo();

 

because of [expr.static.cast] clause 11

 

first question: is my assessment of the situation correct or is this use legal?

if it is not (legal): could we make it legal or would we run afoul of the aliasing rules?

 

best regards

 

Fabio