20 lines
350 B
Rust
20 lines
350 B
Rust
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// ignore-tidy-linelength
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#![feature(existential_type)]
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pub trait Bar {
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type E: Copy;
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fn foo<T>() -> Self::E;
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}
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impl<S> Bar for S {
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existential type E: Copy;
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fn foo<T>() -> Self::E {
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//~^ ERROR type parameter `T` is part of concrete type but not used in parameter list for existential type
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}
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}
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fn main() {}
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