15 lines
247 B
Rust
15 lines
247 B
Rust
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#![feature(type_alias_impl_trait)]
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trait X {
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type I;
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fn f() -> Self::I;
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}
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impl<T> X for () {
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//~^ ERROR `T` is not constrained by the impl trait, self type, or predicates
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type I = impl Sized;
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fn f() -> Self::I {}
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}
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fn main() {}
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