// run-pass // test for #8664 use std::marker; pub trait Trait2<A> { fn doit(&self) -> A; } pub struct Impl<A1, A2, A3> { m1: marker::PhantomData<(A1,A2,A3)>, /* * With A2 we get the ICE: * task <unnamed> failed at 'index out of bounds: the len is 1 but the index is 1', * src/librustc/middle/subst.rs:58 */ t: Box<dyn Trait2<A2>+'static> } impl<A1, A2, A3> Impl<A1, A2, A3> { pub fn step(&self) { self.t.doit(); } } // test for #8601 enum Type<T> { Constant(#[allow(unused_tuple_struct_fields)] T) } trait Trait<K,V> { fn method(&self, _: Type<(K,V)>) -> isize; } impl<V> Trait<u8,V> for () { fn method(&self, _x: Type<(u8,V)>) -> isize { 0 } } pub fn main() { let a = Box::new(()) as Box<dyn Trait<u8, u8>>; assert_eq!(a.method(Type::Constant((1, 2))), 0); }