1 files changed, 60 insertions, 0 deletions
diff --git a/tests/ui/self/arbitrary_self_types_pin_lifetime.rs b/tests/ui/self/arbitrary_self_types_pin_lifetime.rs
new file mode 100644
index 000000000..300201388
--- /dev/null
+++ b/tests/ui/self/arbitrary_self_types_pin_lifetime.rs
@@ -0,0 +1,60 @@
+// check-pass
+
+use std::pin::Pin;
+use std::task::{Context, Poll};
+
+struct Foo;
+
+impl Foo {
+    fn pin_ref(self: Pin<&Self>) -> Pin<&Self> { self }
+
+    fn pin_mut(self: Pin<&mut Self>) -> Pin<&mut Self> { self }
+
+    fn pin_pin_pin_ref(self: Pin<Pin<Pin<&Self>>>) -> Pin<Pin<Pin<&Self>>> { self }
+
+    fn pin_ref_impl_trait(self: Pin<&Self>) -> impl Clone + '_ { self }
+
+    fn b(self: Pin<&Foo>, f: &Foo) -> Pin<&Foo> { self }
+}
+
+type Alias<T> = Pin<T>;
+impl Foo {
+    fn bar<'a>(self: Alias<&Self>, arg: &'a ()) -> Alias<&Self> { self }
+}
+
+struct Bar<T: Unpin, U: Unpin> {
+    field1: T,
+    field2: U,
+}
+
+impl<T: Unpin, U: Unpin> Bar<T, U> {
+    fn fields(self: Pin<&mut Self>) -> (Pin<&mut T>, Pin<&mut U>) {
+        let this = self.get_mut();
+        (Pin::new(&mut this.field1), Pin::new(&mut this.field2))
+    }
+}
+
+trait AsyncBufRead {
+    fn poll_fill_buf(self: Pin<&mut Self>, cx: &mut Context<'_>)
+        -> Poll<std::io::Result<&[u8]>>;
+}
+
+struct Baz(Vec<u8>);
+
+impl AsyncBufRead for Baz {
+    fn poll_fill_buf(self: Pin<&mut Self>, cx: &mut Context<'_>)
+        -> Poll<std::io::Result<&[u8]>>
+    {
+        Poll::Ready(Ok(&self.get_mut().0))
+    }
+}
+
+fn main() {
+    let mut foo = Foo;
+    { Pin::new(&foo).pin_ref() };
+    { Pin::new(&mut foo).pin_mut() };
+    { Pin::new(Pin::new(Pin::new(&foo))).pin_pin_pin_ref() };
+    { Pin::new(&foo).pin_ref_impl_trait() };
+    let mut bar = Bar { field1: 0u8, field2: 1u8 };
+    { Pin::new(&mut bar).fields() };
+}