From 698f8c2f01ea549d77d7dc3338a12e04c11057b9 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 14:02:58 +0200
Subject: Adding upstream version 1.64.0+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 src/test/ui/async-await/issue-73137.rs | 41 ++++++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)
 create mode 100644 src/test/ui/async-await/issue-73137.rs

(limited to 'src/test/ui/async-await/issue-73137.rs')

diff --git a/src/test/ui/async-await/issue-73137.rs b/src/test/ui/async-await/issue-73137.rs
new file mode 100644
index 000000000..c43ce2cad
--- /dev/null
+++ b/src/test/ui/async-await/issue-73137.rs
@@ -0,0 +1,41 @@
+// Regression test for <https://github.com/rust-lang/rust/issues/73137>
+
+// run-pass
+// edition:2018
+
+#![allow(dead_code)]
+use std::future::Future;
+use std::task::{Waker, Wake, Context};
+use std::sync::Arc;
+
+struct DummyWaker;
+impl Wake for DummyWaker {
+    fn wake(self: Arc<Self>) {}
+}
+
+struct Foo {
+    a: usize,
+    b: &'static u32,
+}
+
+#[inline(never)]
+fn nop<T>(_: T) {}
+
+fn main() {
+    let mut fut = Box::pin(async {
+        let action = Foo {
+            b: &42,
+            a: async { 0 }.await,
+        };
+
+        // An error in the generator transform caused `b` to be overwritten with `a` when `b` was
+        // borrowed.
+        nop(&action.b);
+        assert_ne!(0usize, unsafe { std::mem::transmute(action.b) });
+
+        async {}.await;
+    });
+    let waker = Waker::from(Arc::new(DummyWaker));
+    let mut cx = Context::from_waker(&waker);
+    let _ = fut.as_mut().poll(&mut cx);
+}
-- 
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