29 lines
833 B
Rust
29 lines
833 B
Rust
// Copyright 2014 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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// Tests that an `&` pointer to something inherently mutable is itself
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// to be considered mutable.
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#![feature(optin_builtin_traits)]
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use std::marker::Sync;
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struct NoSync;
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impl !Sync for NoSync {}
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enum Foo { A(NoSync) }
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fn bar<T: Sync>(_: T) {}
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fn main() {
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let x = Foo::A(NoSync);
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bar(&x); //~ ERROR the trait `core::marker::Sync` is not implemented
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}
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