From 698f8c2f01ea549d77d7dc3338a12e04c11057b9 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 14:02:58 +0200
Subject: Adding upstream version 1.64.0+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 .../arbitrary_self_types_pointers_and_wrappers.rs  | 68 ++++++++++++++++++++++
 1 file changed, 68 insertions(+)
 create mode 100644 src/test/ui/self/arbitrary_self_types_pointers_and_wrappers.rs

(limited to 'src/test/ui/self/arbitrary_self_types_pointers_and_wrappers.rs')

diff --git a/src/test/ui/self/arbitrary_self_types_pointers_and_wrappers.rs b/src/test/ui/self/arbitrary_self_types_pointers_and_wrappers.rs
new file mode 100644
index 000000000..65fec3bec
--- /dev/null
+++ b/src/test/ui/self/arbitrary_self_types_pointers_and_wrappers.rs
@@ -0,0 +1,68 @@
+// run-pass
+#![feature(arbitrary_self_types, unsize, coerce_unsized, dispatch_from_dyn)]
+#![feature(rustc_attrs)]
+
+use std::{
+    ops::{Deref, CoerceUnsized, DispatchFromDyn},
+    marker::Unsize,
+};
+
+struct Ptr<T: ?Sized>(Box<T>);
+
+impl<T: ?Sized> Deref for Ptr<T> {
+    type Target = T;
+
+    fn deref(&self) -> &T {
+        &*self.0
+    }
+}
+
+impl<T: Unsize<U> + ?Sized, U: ?Sized> CoerceUnsized<Ptr<U>> for Ptr<T> {}
+impl<T: Unsize<U> + ?Sized, U: ?Sized> DispatchFromDyn<Ptr<U>> for Ptr<T> {}
+
+struct Wrapper<T: ?Sized>(T);
+
+impl<T: ?Sized> Deref for Wrapper<T> {
+    type Target = T;
+
+    fn deref(&self) -> &T {
+        &self.0
+    }
+}
+
+impl<T: CoerceUnsized<U>, U> CoerceUnsized<Wrapper<U>> for Wrapper<T> {}
+impl<T: DispatchFromDyn<U>, U> DispatchFromDyn<Wrapper<U>> for Wrapper<T> {}
+
+
+trait Trait {
+    // This method isn't object-safe yet. Unsized by-value `self` is object-safe (but not callable
+    // without unsized_locals), but wrappers arond `Self` currently are not.
+    // FIXME (mikeyhew) uncomment this when unsized rvalues object-safety is implemented
+    // fn wrapper(self: Wrapper<Self>) -> i32;
+    fn ptr_wrapper(self: Ptr<Wrapper<Self>>) -> i32;
+    fn wrapper_ptr(self: Wrapper<Ptr<Self>>) -> i32;
+    fn wrapper_ptr_wrapper(self: Wrapper<Ptr<Wrapper<Self>>>) -> i32;
+}
+
+impl Trait for i32 {
+    fn ptr_wrapper(self: Ptr<Wrapper<Self>>) -> i32 {
+        **self
+    }
+    fn wrapper_ptr(self: Wrapper<Ptr<Self>>) -> i32 {
+        **self
+    }
+    fn wrapper_ptr_wrapper(self: Wrapper<Ptr<Wrapper<Self>>>) -> i32 {
+        ***self
+    }
+}
+
+fn main() {
+    let pw = Ptr(Box::new(Wrapper(5))) as Ptr<Wrapper<dyn Trait>>;
+    assert_eq!(pw.ptr_wrapper(), 5);
+
+    let wp = Wrapper(Ptr(Box::new(6))) as Wrapper<Ptr<dyn Trait>>;
+    assert_eq!(wp.wrapper_ptr(), 6);
+
+    let wpw = Wrapper(Ptr(Box::new(Wrapper(7)))) as Wrapper<Ptr<Wrapper<dyn Trait>>>;
+    assert_eq!(wpw.wrapper_ptr_wrapper(), 7);
+}
-- 
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