add tests

Author: b-naber

src/test/ui/mir/issue-105819.rs

@@ -0,0 +1,15 @@
+#![feature(type_alias_impl_trait)]
+// check-pass
+
+fn main() {}
+
+fn upvar() {
+    #[derive(Copy, Clone)]
+    struct Foo((u32, u32));
+
+    type T = impl Copy;
+    let foo: T = Foo((1u32, 2u32));
+    let x = move || {
+        let Foo((a, b)) = foo;
+    };
+}

src/test/ui/mir/issue-105881.rs

@@ -0,0 +1,38 @@
+// check-pass
+// compile-flags: --edition 2018
+
+use std::future::Future;
+use std::pin::Pin;
+use std::task::{Context, Poll};
+
+async fn new_future() {
+    loop {}
+}
+
+pub struct SelectAll<Fut> {
+    _inner: Fut,
+}
+
+fn select_all<I>(_: I) -> SelectAll<I::Item>
+where
+    I: IntoIterator,
+    I::Item: Future + Unpin,
+{
+    loop {}
+}
+
+impl<Fut: Future> Future for SelectAll<Fut> {
+    type Output = ();
+
+    fn poll(self: Pin<&mut Self>, _: &mut Context<'_>) -> Poll<Self::Output> {
+        loop {}
+    }
+}
+
+async fn run_one_step() {
+    let mut select = select_all(vec![Box::pin(new_future())]);
+    let poll_fns = &mut |cx: &mut Context<'_>| Pin::new(&mut select).poll(cx);
+    for _poll_fn in [poll_fns] {}
+}
+
+fn main() {}