rust/src/test/compile-fail/unsafe-fn-autoderef.rs
2012-08-01 19:16:06 -07:00

23 lines
672 B
Rust

// -*- rust -*-
type rec = {f: int};
fn f(p: *rec) -> int {
// Test that * ptrs do not autoderef. There is a deeper reason for
// prohibiting this, beyond making unsafe things annoying (which doesn't
// actually seem desirable to me). The deeper reason is that if you
// have a type like:
//
// enum foo = *foo;
//
// you end up with an infinite auto-deref chain, which is
// currently impossible (in all other cases, infinite auto-derefs
// are prohibited by various checks, such as that the enum is
// instantiable and so forth).
return p.f; //~ ERROR attempted access of field `f` on type `*rec`
}
fn main() {
}