9e3d0b002a
This breaks a fair amount of code. The typical patterns are:
* `for _ in range(0, 10)`: change to `for _ in range(0u, 10)`;
* `println!("{}", 3)`: change to `println!("{}", 3i)`;
* `[1, 2, 3].len()`: change to `[1i, 2, 3].len()`.
RFC #30. Closes #6023.
[breaking-change]
32 lines
1.0 KiB
Rust
32 lines
1.0 KiB
Rust
// Copyright 2013 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 "transitivity" of super-builtin-kinds on traits. Here, if
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// we have a Foo, we know we have a Bar, and if we have a Bar, we
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// know we have a Send. So if we have a Foo we should know we have
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// a Send. Basically this just makes sure rustc is using
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// each_bound_trait_and_supertraits in type_contents correctly.
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trait Bar : Send { }
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trait Foo : Bar { }
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impl <T: Send> Foo for T { }
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impl <T: Send> Bar for T { }
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fn foo<T: Foo>(val: T, chan: Sender<T>) {
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chan.send(val);
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}
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pub fn main() {
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let (tx, rx) = channel();
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foo(31337i, tx);
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assert!(rx.recv() == 31337i);
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}
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