Reduce regression test

Author: eholk

src/test/ui/generator/issue-93161.rs

@@ -1,31 +1,8 @@
 // edition:2021
-// run-pass
+// build-pass
 
 #![feature(never_type)]
 
-use std::future::Future;
-
-// See if we can run a basic `async fn`
-pub async fn foo(x: &u32, y: u32) -> u32 {
-    let y = &y;
-    let z = 9;
-    let z = &z;
-    let y = async { *y + *z }.await;
-    let a = 10;
-    let a = &a;
-    *x + y + *a
-}
-
-async fn add(x: u32, y: u32) -> u32 {
-    let a = async { x + y };
-    a.await
-}
-
-async fn build_aggregate(a: u32, b: u32, c: u32, d: u32) -> u32 {
-    let x = (add(a, b).await, add(c, d).await);
-    x.0 + x.1
-}
-
 enum Never {}
 fn never() -> Never {
     panic!()
@@ -43,51 +20,6 @@ async fn includes_never(crash: bool, x: u32) -> u32 {
     result
 }
 
-async fn partial_init(x: u32) -> u32 {
-    #[allow(unreachable_code)]
-    let _x: (String, !) = (String::new(), return async { x + x }.await);
-}
-
-async fn read_exact(_from: &mut &[u8], _to: &mut [u8]) -> Option<()> {
-    Some(())
-}
-
-async fn hello_world() {
-    let data = [0u8; 1];
-    let mut reader = &data[..];
-
-    let mut marker = [0u8; 1];
-    read_exact(&mut reader, &mut marker).await.unwrap();
-}
-
-fn run_fut<T>(fut: impl Future<Output = T>) -> T {
-    use std::sync::Arc;
-    use std::task::{Context, Poll, Wake, Waker};
-
-    struct MyWaker;
-    impl Wake for MyWaker {
-        fn wake(self: Arc<Self>) {
-            unimplemented!()
-        }
-    }
-
-    let waker = Waker::from(Arc::new(MyWaker));
-    let mut context = Context::from_waker(&waker);
-
-    let mut pinned = Box::pin(fut);
-    loop {
-        match pinned.as_mut().poll(&mut context) {
-            Poll::Pending => continue,
-            Poll::Ready(v) => return v,
-        }
-    }
-}
-
 fn main() {
-    let x = 5;
-    assert_eq!(run_fut(foo(&x, 7)), 31);
-    assert_eq!(run_fut(build_aggregate(1, 2, 3, 4)), 10);
-    assert_eq!(run_fut(includes_never(false, 4)), 16);
-    assert_eq!(run_fut(partial_init(4)), 8);
-    run_fut(hello_world());
+    let _ = includes_never(false, 4);
 }