1 files changed, 103 insertions, 0 deletions
diff --git a/tests/ui/borrowck/borrowck-borrow-overloaded-auto-deref.rs b/tests/ui/borrowck/borrowck-borrow-overloaded-auto-deref.rs
new file mode 100644
index 000000000..83eab7fde
--- /dev/null
+++ b/tests/ui/borrowck/borrowck-borrow-overloaded-auto-deref.rs
@@ -0,0 +1,103 @@
+// Test how overloaded deref interacts with borrows when only
+// Deref and not DerefMut is implemented.
+
+use std::ops::Deref;
+use std::rc::Rc;
+
+struct Point {
+    x: isize,
+    y: isize
+}
+
+impl Point {
+    fn get(&self) -> (isize, isize) {
+        (self.x, self.y)
+    }
+
+    fn set(&mut self, x: isize, y: isize) {
+        self.x = x;
+        self.y = y;
+    }
+
+    fn x_ref(&self) -> &isize {
+        &self.x
+    }
+
+    fn y_mut(&mut self) -> &mut isize {
+        &mut self.y
+    }
+}
+
+fn deref_imm_field(x: Rc<Point>) {
+    let __isize = &x.y;
+}
+
+fn deref_mut_field1(x: Rc<Point>) {
+    let __isize = &mut x.y; //~ ERROR cannot borrow
+}
+
+fn deref_mut_field2(mut x: Rc<Point>) {
+    let __isize = &mut x.y; //~ ERROR cannot borrow
+}
+
+fn deref_extend_field(x: &Rc<Point>) -> &isize {
+    &x.y
+}
+
+fn deref_extend_mut_field1(x: &Rc<Point>) -> &mut isize {
+    &mut x.y //~ ERROR cannot borrow
+}
+
+fn deref_extend_mut_field2(x: &mut Rc<Point>) -> &mut isize {
+    &mut x.y //~ ERROR cannot borrow
+}
+
+fn assign_field1<'a>(x: Rc<Point>) {
+    x.y = 3; //~ ERROR cannot assign
+}
+
+fn assign_field2<'a>(x: &'a Rc<Point>) {
+    x.y = 3; //~ ERROR cannot assign
+}
+
+fn assign_field3<'a>(x: &'a mut Rc<Point>) {
+    x.y = 3; //~ ERROR cannot assign
+}
+
+fn deref_imm_method(x: Rc<Point>) {
+    let __isize = x.get();
+}
+
+fn deref_mut_method1(x: Rc<Point>) {
+    x.set(0, 0); //~ ERROR cannot borrow
+}
+
+fn deref_mut_method2(mut x: Rc<Point>) {
+    x.set(0, 0); //~ ERROR cannot borrow
+}
+
+fn deref_extend_method(x: &Rc<Point>) -> &isize {
+    x.x_ref()
+}
+
+fn deref_extend_mut_method1(x: &Rc<Point>) -> &mut isize {
+    x.y_mut() //~ ERROR cannot borrow
+}
+
+fn deref_extend_mut_method2(x: &mut Rc<Point>) -> &mut isize {
+    x.y_mut() //~ ERROR cannot borrow
+}
+
+fn assign_method1<'a>(x: Rc<Point>) {
+    *x.y_mut() = 3; //~ ERROR cannot borrow
+}
+
+fn assign_method2<'a>(x: &'a Rc<Point>) {
+    *x.y_mut() = 3; //~ ERROR cannot borrow
+}
+
+fn assign_method3<'a>(x: &'a mut Rc<Point>) {
+    *x.y_mut() = 3; //~ ERROR cannot borrow
+}
+
+pub fn main() {}