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, 42 insertions, 0 deletions

diff --git a/src/test/ui/specialization/defaultimpl/projection.rs b/src/test/ui/specialization/defaultimpl/projection.rs
new file mode 100644
index 000000000..f19c55b04
--- /dev/null
+++ b/src/test/ui/specialization/defaultimpl/projection.rs
@@ -0,0 +1,42 @@
+// run-pass
+#![allow(dead_code)]
+
+#![feature(specialization)] //~ WARN the feature `specialization` is incomplete
+
+// Make sure we *can* project non-defaulted associated types
+// cf ui/specialization/specialization-default-projection.rs
+
+// First, do so without any use of specialization
+
+trait Foo {
+    type Assoc;
+}
+
+impl<T> Foo for T {
+    type Assoc = ();
+}
+
+fn generic_foo<T>() -> <T as Foo>::Assoc {
+    ()
+}
+
+// Next, allow for one layer of specialization
+
+trait Bar {
+    type Assoc;
+}
+
+default impl<T> Bar for T {
+    type Assoc = ();
+}
+
+impl<T: Clone> Bar for T {
+    type Assoc = u8;
+}
+
+fn generic_bar_clone<T: Clone>() -> <T as Bar>::Assoc {
+    0u8
+}
+
+fn main() {
+}