1 files changed, 28 insertions, 0 deletions
diff --git a/tests/ui/cfg/proper_unpin.rs b/tests/ui/cfg/proper_unpin.rs
new file mode 100644
index 0000000..b7bb04d
--- /dev/null
+++ b/tests/ui/cfg/proper_unpin.rs
@@ -0,0 +1,28 @@
+use pin_project::pin_project;
+use std::marker::PhantomPinned;
+
+#[pin_project]
+struct Foo<T> {
+    #[cfg(any())]
+    #[pin]
+    inner: T,
+    #[cfg(not(any()))]
+    inner: T,
+}
+
+#[pin_project]
+struct Bar<T> {
+    #[cfg(any())]
+    inner: T,
+    #[cfg(not(any()))]
+    #[pin]
+    inner: T,
+}
+
+fn is_unpin<T: Unpin>() {}
+
+fn main() {
+    is_unpin::<Foo<PhantomPinned>>(); // Ok
+    is_unpin::<Bar<()>>(); // Ok
+    is_unpin::<Bar<PhantomPinned>>(); //~ ERROR E0277
+}