21 lines
373 B
Rust
21 lines
373 B
Rust
pub trait Trait1<X> {
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type Output;
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}
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pub trait Trait2<X> {}
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pub struct A;
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impl<X, T> Trait1<X> for T where T: Trait2<X> {
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type Output = ();
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}
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impl<X> Trait1<Box<X>> for A {
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//~^ ERROR conflicting implementations of trait
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//~| hard error
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//~| downstream crates may implement trait `Trait2<std::boxed::Box<_>>` for type `A`
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type Output = i32;
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}
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fn main() {}
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