20 lines
467 B
Rust
20 lines
467 B
Rust
// compile-flags: -Ztrait-solver=next
|
|
// check-pass
|
|
|
|
// Makes sure we don't prepopulate the MIR typeck of `define`
|
|
// with `Foo<T, U> = T`, but instead, `Foo<B, A> = B`, so that
|
|
// the param-env predicates actually apply.
|
|
|
|
#![feature(type_alias_impl_trait)]
|
|
|
|
type Foo<T: Send, U> = impl NeedsSend<T>;
|
|
|
|
trait NeedsSend<T> {}
|
|
impl<T: Send> NeedsSend<T> for T {}
|
|
|
|
fn define<A, B: Send>(a: A, b: B, _: Foo<B, A>) {
|
|
let y: Option<Foo<B, A>> = Some(b);
|
|
}
|
|
|
|
fn main() {}
|