mirror of https://github.com/rust-lang/rust
35 lines
379 B
Rust
35 lines
379 B
Rust
//@ check-pass
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trait Identity<Q> {
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type T;
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}
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impl<Q, T> Identity<Q> for T {
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type T = T;
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}
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trait Holds {
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type Q;
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}
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struct S;
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struct X(S);
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struct XHelper;
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impl Holds for X {
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type Q = XHelper;
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}
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impl<Q> Clone for X
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where
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<S as Identity<Q>>::T: Clone,
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X: Holds<Q = Q>,
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{
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fn clone(&self) -> Self {
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Self(self.0.clone())
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}
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}
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fn main() {}
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