mirror of https://github.com/rust-lang/rust
29 lines
574 B
Rust
29 lines
574 B
Rust
//@ run-pass
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pub struct ClientMap;
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pub struct ClientMap2;
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pub trait Service {
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type Request;
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fn call(&self, _req: Self::Request);
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}
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pub struct S<T>(#[allow(dead_code)] T);
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impl Service for ClientMap {
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type Request = S<Box<dyn Fn(i32)>>;
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fn call(&self, _req: Self::Request) {}
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}
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impl Service for ClientMap2 {
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type Request = (Box<dyn Fn(i32)>,);
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fn call(&self, _req: Self::Request) {}
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}
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fn main() {
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ClientMap.call(S { 0: Box::new(|_msgid| ()) });
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ClientMap.call(S(Box::new(|_msgid| ())));
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ClientMap2.call((Box::new(|_msgid| ()),));
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}
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