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24 lines
712 B
Rust
24 lines
712 B
Rust
#![recursion_limit="1024"]
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#![allow(dead_code)]
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pub struct S0<T>(T,T);
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pub struct S1<T>(Option<Box<S0<S0<T>>>>,Option<Box<S0<S0<T>>>>);
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pub struct S2<T>(Option<Box<S1<S1<T>>>>,Option<Box<S1<S1<T>>>>);
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pub struct S3<T>(Option<Box<S2<S2<T>>>>,Option<Box<S2<S2<T>>>>);
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pub struct S4<T>(Option<Box<S3<S3<T>>>>,Option<Box<S3<S3<T>>>>);
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pub struct S5<T>(Option<Box<S4<S4<T>>>>,Option<Box<S4<S4<T>>>>,Option<T>);
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trait Foo { fn xxx(&self); }
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trait Bar {} // anything local or #[fundamental]
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impl<T> Foo for T where T: Bar, T: Sync {
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fn xxx(&self) {}
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}
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impl Foo for S5<u32> { fn xxx(&self) {} }
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impl Foo for S5<u64> { fn xxx(&self) {} }
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fn main() {
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let _ = <S5<_>>::xxx; //~ ERROR type annotations needed
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}
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