1 files changed, 23 insertions, 0 deletions
diff --git a/tests/ui/self/self-in-mut-slot-immediate-value.rs b/tests/ui/self/self-in-mut-slot-immediate-value.rs
new file mode 100644
index 000000000..60865304f
--- /dev/null
+++ b/tests/ui/self/self-in-mut-slot-immediate-value.rs
@@ -0,0 +1,23 @@
+// run-pass
+// Assert that `mut self` on an immediate value doesn't
+// allow mutating the original - issue #10615.
+
+
+#[derive(Copy, Clone)]
+struct Value {
+    n: isize
+}
+
+impl Value {
+    fn squared(mut self) -> Value {
+        self.n *= self.n;
+        self
+    }
+}
+
+pub fn main() {
+    let x = Value { n: 3 };
+    let y = x.squared();
+    assert_eq!(x.n, 3);
+    assert_eq!(y.n, 9);
+}