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, 40 insertions, 0 deletions

diff --git a/src/test/ui/objects-coerce-freeze-borrored.rs b/src/test/ui/objects-coerce-freeze-borrored.rs
new file mode 100644
index 000000000..704d77480
--- /dev/null
+++ b/src/test/ui/objects-coerce-freeze-borrored.rs
@@ -0,0 +1,40 @@
+// run-pass
+// Test that we can coerce an `@Object` to an `&Object`
+
+
+trait Foo {
+    fn foo(&self) -> usize;
+    fn bar(&mut self) -> usize;
+}
+
+impl Foo for usize {
+    fn foo(&self) -> usize {
+        *self
+    }
+
+    fn bar(&mut self) -> usize {
+        *self += 1;
+        *self
+    }
+}
+
+fn do_it_mut(obj: &mut dyn Foo) {
+    let x = obj.bar();
+    let y = obj.foo();
+    assert_eq!(x, y);
+
+    do_it_imm(obj, y);
+}
+
+fn do_it_imm(obj: &dyn Foo, v: usize) {
+    let y = obj.foo();
+    assert_eq!(v, y);
+}
+
+pub fn main() {
+    let mut x: usize = 22;
+    let obj = &mut x as &mut dyn Foo;
+    do_it_mut(obj);
+    do_it_imm(obj, 23);
+    do_it_mut(obj);
+}