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-rw-r--r--tests/ui/self/self-in-mut-slot-default-method.rs35
1 files changed, 35 insertions, 0 deletions
diff --git a/tests/ui/self/self-in-mut-slot-default-method.rs b/tests/ui/self/self-in-mut-slot-default-method.rs
new file mode 100644
index 000000000..45e122c8d
--- /dev/null
+++ b/tests/ui/self/self-in-mut-slot-default-method.rs
@@ -0,0 +1,35 @@
+// run-pass
+
+struct X {
+ a: isize
+}
+
+trait Changer : Sized {
+ fn change(mut self) -> Self {
+ self.set_to(55);
+ self
+ }
+
+ fn change_again(mut self: Box<Self>) -> Box<Self> {
+ self.set_to(45);
+ self
+ }
+
+ fn set_to(&mut self, a: isize);
+}
+
+impl Changer for X {
+ fn set_to(&mut self, a: isize) {
+ self.a = a;
+ }
+}
+
+pub fn main() {
+ let x = X { a: 32 };
+ let new_x = x.change();
+ assert_eq!(new_x.a, 55);
+
+ let x: Box<_> = Box::new(new_x);
+ let new_x = x.change_again();
+ assert_eq!(new_x.a, 45);
+}