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// Test that declaring that `&T` is `Defaulted` if `T:Signed` implies
// that other `&T` is NOT `Defaulted` if `T:Signed` does not hold. In
// other words, the auto impl only applies if there are no existing
// impls whose types unify.
#![feature(auto_traits)]
#![feature(negative_impls)]
auto trait Defaulted { }
impl<'a,T:Signed> Defaulted for &'a T { }
impl<'a,T:Signed> Defaulted for &'a mut T { }
fn is_defaulted<T:Defaulted>() { }
trait Signed { }
impl Signed for i32 { }
fn main() {
is_defaulted::<&'static i32>();
is_defaulted::<&'static u32>();
//~^ ERROR `u32: Signed` is not satisfied
}
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