1 files changed, 19 insertions, 0 deletions
diff --git a/tests/ui/overlapping_unpin_struct.rs b/tests/ui/overlapping_unpin_struct.rs
new file mode 100644
index 0000000..1338524
--- /dev/null
+++ b/tests/ui/overlapping_unpin_struct.rs
@@ -0,0 +1,19 @@
+use pin_project_lite::pin_project;
+use std::marker::PhantomPinned;
+
+pin_project! {
+    struct Foo<T> {
+        #[pin]
+        inner: T,
+    }
+}
+
+struct __Origin {}
+
+impl Unpin for __Origin {}
+
+fn is_unpin<T: Unpin>() {}
+
+fn main() {
+    is_unpin::<Foo<PhantomPinned>>(); //~ ERROR E0277
+}