f46f388cb2
Any auto trait is allowed in trait object bounds. Fix duplicate check of type and lifetime parameter count.
39 lines
1 KiB
Rust
39 lines
1 KiB
Rust
// Copyright 2017 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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#![feature(optin_builtin_traits)]
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auto trait Auto {}
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// Redundant but accepted until we remove it.
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#[allow(auto_impl)]
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impl Auto for .. {}
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unsafe auto trait AutoUnsafe {}
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impl !Auto for bool {}
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impl !AutoUnsafe for bool {}
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struct AutoBool(bool);
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impl Auto for AutoBool {}
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unsafe impl AutoUnsafe for AutoBool {}
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fn take_auto<T: Auto>(_: T) {}
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fn take_auto_unsafe<T: AutoUnsafe>(_: T) {}
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fn main() {
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take_auto(0);
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take_auto(AutoBool(true));
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take_auto_unsafe(0);
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take_auto_unsafe(AutoBool(true));
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/// Auto traits are allowed in trait object bounds.
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let _: &(Send + Auto) = &0;
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}
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