mirror of https://github.com/rust-lang/rust
34 lines
961 B
Rust
34 lines
961 B
Rust
// Test which object types are considered sendable. This test
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// is broken into two parts because some errors occur in distinct
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// phases in the compiler. See kindck-send-object2.rs as well!
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fn assert_send<T:Send+'static>() { }
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trait Dummy { }
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// careful with object types, who knows what they close over...
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fn test51<'a>() {
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assert_send::<&'a dyn Dummy>();
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//~^ ERROR `&'a (dyn Dummy + 'a)` cannot be sent between threads safely [E0277]
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}
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fn test52<'a>() {
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assert_send::<&'a (dyn Dummy + Sync)>();
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//~^ ERROR: lifetime may not live long enough
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}
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// ...unless they are properly bounded
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fn test60() {
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assert_send::<&'static (dyn Dummy + Sync)>();
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}
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fn test61() {
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assert_send::<Box<dyn Dummy + Send>>();
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}
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// closure and object types can have lifetime bounds which make
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// them not ok
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fn test_71<'a>() {
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assert_send::<Box<dyn Dummy + 'a>>();
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//~^ ERROR `(dyn Dummy + 'a)` cannot be sent between threads safely
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}
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fn main() { }
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