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#![feature(negative_impls)]
#![feature(specialization)] //~ WARN the feature `specialization` is incomplete
struct S;
struct Z;
default impl S {} //~ ERROR inherent impls cannot be default
default unsafe impl Send for S {}
//~^ ERROR impls of auto traits cannot be default
default impl !Send for Z {}
//~^ ERROR impls of auto traits cannot be default
//~| ERROR negative impls cannot be default impls
//~| ERROR `!Send` impl requires `Z: Send` but the struct it is implemented for does not
trait Tr {}
default impl !Tr for S {}
//~^ ERROR negative impls cannot be default impls
fn main() {}
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