34 lines
1.1 KiB
Rust
34 lines
1.1 KiB
Rust
// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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struct Rec {
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f: int
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}
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fn f(p: *Rec) -> int {
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// Test that * ptrs do not autoderef. There is a deeper reason for
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// prohibiting this, beyond making unsafe things annoying (which doesn't
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// actually seem desirable to me). The deeper reason is that if you
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// have a type like:
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//
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// enum foo = *foo;
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//
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// you end up with an infinite auto-deref chain, which is
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// currently impossible (in all other cases, infinite auto-derefs
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// are prohibited by various checks, such as that the enum is
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// instantiable and so forth).
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return p.f; //~ ERROR attempted access of field `f` on type `*Rec`
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}
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fn main() {
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}
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