30 lines
662 B
Rust
30 lines
662 B
Rust
//@ check-pass
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#![allow(dead_code)]
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//@ pretty-expanded FIXME #23616
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trait T0 {
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type O;
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fn dummy(&self) { }
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}
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struct S<A>(A);
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impl<A> T0 for S<A> { type O = A; }
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trait T1: T0 {
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// this looks okay but as we see below, `f` is unusable
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fn m0<F: Fn(<Self as T0>::O) -> bool>(self, f: F) -> bool;
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}
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// complains about the bounds on F here not being required by the trait
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impl<A> T1 for S<A> {
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fn m0<F: Fn(A) -> bool>(self, f: F) -> bool { f(self.0) }
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}
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// // complains about mismatched types: <S<A> as T0>::O vs. A
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// impl<A> T1 for S<A>
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// {
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// fn m0<F: Fn(<Self as T0>::O) -> bool>(self, f: F) -> bool { f(self.0) }
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// }
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fn main() { }
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