Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 43 insertions, 0 deletions

diff --git a/src/test/ui/specialization/issue-35376.rs b/src/test/ui/specialization/issue-35376.rs
new file mode 100644
index 000000000..cc35213b9
--- /dev/null
+++ b/src/test/ui/specialization/issue-35376.rs
@@ -0,0 +1,43 @@
+// check-pass
+#![feature(specialization)]
+//~^ WARN the feature `specialization` is incomplete
+
+fn main() {}
+
+pub trait Alpha<T> { }
+
+pub trait Beta {
+    type Event;
+}
+
+pub trait Delta {
+    type Handle;
+    fn process(&self);
+}
+
+pub struct Parent<A, T>(A, T);
+
+impl<A, T> Delta for Parent<A, T>
+where A: Alpha<T::Handle>,
+      T: Delta,
+      T::Handle: Beta<Event = <Handle as Beta>::Event> {
+    type Handle = Handle;
+    default fn process(&self) {
+        unimplemented!()
+    }
+}
+
+impl<A, T> Delta for Parent<A, T>
+where A: Alpha<T::Handle> + Alpha<Handle>,
+      T: Delta,
+      T::Handle: Beta<Event = <Handle as Beta>::Event> {
+      fn process(&self) {
+        unimplemented!()
+      }
+}
+
+pub struct Handle;
+
+impl Beta for Handle {
+    type Event = ();
+}