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