8a461d940c
suggest adding a where-clause when there is an unmet trait-bound that can be satisfied if some type can implement it.
36 lines
1.2 KiB
Rust
36 lines
1.2 KiB
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. The tests
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// in this file all test the "kind" violates detected during kindck.
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// See all `regions-bounded-by-send.rs`
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fn assert_send<T:Send>() { }
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trait Dummy { }
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trait Message : Send { }
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// careful with object types, who knows what they close over...
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fn object_ref_with_static_bound_not_ok() {
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assert_send::<&'static (Dummy+'static)>();
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//~^ ERROR : std::marker::Sync` is not satisfied
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}
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fn box_object_with_no_bound_not_ok<'a>() {
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assert_send::<Box<Dummy>>(); //~ ERROR : std::marker::Send` is not satisfied
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}
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fn object_with_send_bound_ok() {
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assert_send::<&'static (Dummy+Sync)>();
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assert_send::<Box<Dummy+Send>>();
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}
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fn main() { }
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