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, 34 insertions, 0 deletions

diff --git a/src/test/ui/borrowck/borrowck-rvalues-mutable.rs b/src/test/ui/borrowck/borrowck-rvalues-mutable.rs
new file mode 100644
index 000000000..c4695c942
--- /dev/null
+++ b/src/test/ui/borrowck/borrowck-rvalues-mutable.rs
@@ -0,0 +1,34 @@
+// run-pass
+
+struct Counter {
+    value: usize
+}
+
+impl Counter {
+    fn new(v: usize) -> Counter {
+        Counter {value: v}
+    }
+
+    fn inc<'a>(&'a mut self) -> &'a mut Counter {
+        self.value += 1;
+        self
+    }
+
+    fn get(&self) -> usize {
+        self.value
+    }
+
+    fn get_and_inc(&mut self) -> usize {
+        let v = self.value;
+        self.value += 1;
+        v
+    }
+}
+
+pub fn main() {
+    let v = Counter::new(22).get_and_inc();
+    assert_eq!(v, 22);
+
+    let v = Counter::new(22).inc().inc().get();
+    assert_eq!(v, 24);
+}