Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 37 insertions, 0 deletions

diff --git a/src/test/ui/macros/format-args-temporaries-async.rs b/src/test/ui/macros/format-args-temporaries-async.rs
new file mode 100644
index 000000000..d959329b9
--- /dev/null
+++ b/src/test/ui/macros/format-args-temporaries-async.rs
@@ -0,0 +1,37 @@
+// check-pass
+// edition:2021
+
+use std::fmt::{self, Display};
+use std::future::Future;
+use std::io;
+use std::pin::Pin;
+use std::task::{Context, Poll};
+
+struct AsyncStdout;
+
+impl AsyncStdout {
+    fn write_fmt<'a>(&'a mut self, _args: fmt::Arguments) -> WriteFmtFuture<'a, Self>
+    where
+        Self: Unpin,
+    {
+        WriteFmtFuture(self)
+    }
+}
+
+struct WriteFmtFuture<'a, T>(&'a mut T);
+
+impl<'a, T> Future for WriteFmtFuture<'a, T> {
+    type Output = io::Result<()>;
+    fn poll(self: Pin<&mut Self>, cx: &mut Context) -> Poll<Self::Output> {
+        unimplemented!()
+    }
+}
+
+async fn async_main() {
+    let _write = write!(&mut AsyncStdout, "...").await;
+    let _writeln = writeln!(&mut AsyncStdout, "...").await;
+}
+
+fn main() {
+    let _ = async_main;
+}