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>
---
 .../clippy/tests/ui/await_holding_refcell_ref.rs   | 85 ++++++++++++++++++++++
 1 file changed, 85 insertions(+)
 create mode 100644 src/tools/clippy/tests/ui/await_holding_refcell_ref.rs

(limited to 'src/tools/clippy/tests/ui/await_holding_refcell_ref.rs')

diff --git a/src/tools/clippy/tests/ui/await_holding_refcell_ref.rs b/src/tools/clippy/tests/ui/await_holding_refcell_ref.rs
new file mode 100644
index 000000000..23b7095de
--- /dev/null
+++ b/src/tools/clippy/tests/ui/await_holding_refcell_ref.rs
@@ -0,0 +1,85 @@
+#![warn(clippy::await_holding_refcell_ref)]
+
+use std::cell::RefCell;
+
+async fn bad(x: &RefCell<u32>) -> u32 {
+    let b = x.borrow();
+    baz().await
+}
+
+async fn bad_mut(x: &RefCell<u32>) -> u32 {
+    let b = x.borrow_mut();
+    baz().await
+}
+
+async fn good(x: &RefCell<u32>) -> u32 {
+    {
+        let b = x.borrow_mut();
+        let y = *b + 1;
+    }
+    baz().await;
+    let b = x.borrow_mut();
+    47
+}
+
+async fn baz() -> u32 {
+    42
+}
+
+async fn also_bad(x: &RefCell<u32>) -> u32 {
+    let first = baz().await;
+
+    let b = x.borrow_mut();
+
+    let second = baz().await;
+
+    let third = baz().await;
+
+    first + second + third
+}
+
+async fn less_bad(x: &RefCell<u32>) -> u32 {
+    let first = baz().await;
+
+    let b = x.borrow_mut();
+
+    let second = baz().await;
+
+    drop(b);
+
+    let third = baz().await;
+
+    first + second + third
+}
+
+async fn not_good(x: &RefCell<u32>) -> u32 {
+    let first = baz().await;
+
+    let second = {
+        let b = x.borrow_mut();
+        baz().await
+    };
+
+    let third = baz().await;
+
+    first + second + third
+}
+
+#[allow(clippy::manual_async_fn)]
+fn block_bad(x: &RefCell<u32>) -> impl std::future::Future<Output = u32> + '_ {
+    async move {
+        let b = x.borrow_mut();
+        baz().await
+    }
+}
+
+fn main() {
+    let rc = RefCell::new(100);
+    good(&rc);
+    bad(&rc);
+    bad_mut(&rc);
+    also_bad(&rc);
+    less_bad(&rc);
+    not_good(&rc);
+    block_bad(&rc);
+}
-- 
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