8a461d940c
suggest adding a where-clause when there is an unmet trait-bound that can be satisfied if some type can implement it.
26 lines
864 B
Rust
26 lines
864 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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// Test which of the builtin types are considered sendable.
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fn assert_send<T:Send>() { }
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// owned content are ok
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fn test30() { assert_send::<Box<isize>>(); }
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fn test31() { assert_send::<String>(); }
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fn test32() { assert_send::<Vec<isize> >(); }
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// but not if they own a bad thing
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fn test40() {
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assert_send::<Box<*mut u8>>(); //~ ERROR : std::marker::Send` is not satisfied
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}
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fn main() { }
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