182db6e7f8
Closes #17732 Closes #18819 Closes #19479 Closes #19631 Closes #19632 Closes #19850 Closes #19883 Closes #20005 Closes #20009 Closes #20389
26 lines
747 B
Rust
26 lines
747 B
Rust
// Copyright 2015 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(associated_types)]
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trait From<Src> {
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type Result;
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fn from(src: Src) -> Self::Result;
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}
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trait To {
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fn to<Dst>(self) -> <Dst as From<Self>>::Result where Dst: From<Self> {
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From::from(self) //~error: type annotations required
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}
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}
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fn main() {}
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