1 files changed, 32 insertions, 0 deletions
diff --git a/tests/ui/pin_project/override-priv-mod.rs b/tests/ui/pin_project/override-priv-mod.rs
new file mode 100644
index 0000000..890fd5b
--- /dev/null
+++ b/tests/ui/pin_project/override-priv-mod.rs
@@ -0,0 +1,32 @@
+// https://discord.com/channels/273534239310479360/512792629516173323/870075511009857617
+
+extern crate pin_project as pin_project_orig;
+extern crate self as pin_project;
+
+pub use ::pin_project_orig::*;
+mod __private {
+    pub use ::pin_project_orig::__private::*;
+    pub trait Drop {}
+}
+
+use std::{marker::PhantomPinned, mem};
+
+#[pin_project] //~ ERROR conflicting implementations of trait `_::FooMustNotImplDrop`
+struct S {
+    #[pin]
+    f: (u8, PhantomPinned),
+}
+
+impl Drop for S {
+    fn drop(&mut self) {
+        let prev = &self.f.0 as *const _ as usize;
+        let moved = mem::take(&mut self.f); // move pinned field
+        let moved = &moved.0 as *const _ as usize;
+        assert_eq!(prev, moved); // panic
+    }
+}
+
+fn main() {
+    let mut x = Box::pin(S { f: (1, PhantomPinned) });
+    let _f = x.as_mut().project().f; // first mutable access
+}