rust/tests/ui/traits/reservation-impl/coherence-conflict.rs

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// check that reservation impls are accounted for in negative reasoning.
#![feature(rustc_attrs)]
trait MyTrait {}
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#[rustc_reservation_impl="this impl is reserved"]
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impl MyTrait for () {}
trait OtherTrait {}
impl OtherTrait for () {}
impl<T: MyTrait> OtherTrait for T {}
//~^ ERROR conflicting implementations
fn main() {}