--- /dev/null
+// Copyright 2016 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+#![feature(nll)]
+
+struct Foo;
+
+impl Foo {
+ fn get_self(&mut self) -> Option<&mut Self> {
+ Some(self)
+ }
+
+ fn new_self(&mut self) -> &mut Self {
+ self
+ }
+
+ fn trigger_bug(&mut self) {
+ let other = &mut (&mut *self);
+
+ *other = match (*other).get_self() {
+ Some(s) => s,
+ None => (*other).new_self()
+ //~^ ERROR cannot borrow `**other` as mutable more than once at a time [E0499]
+ };
+
+ let c = other;
+ //~^ ERROR cannot move out of `other` because it is borrowed [E0505]
+ }
+}
+
+fn main() {}
--- /dev/null
+error[E0499]: cannot borrow `**other` as mutable more than once at a time
+ --> $DIR/issue-46589.rs:29:21
+ |
+LL | *other = match (*other).get_self() {
+ | -------- first mutable borrow occurs here
+LL | Some(s) => s,
+LL | None => (*other).new_self()
+ | ^^^^^^^^
+ | |
+ | second mutable borrow occurs here
+ | first borrow later used here
+
+error[E0505]: cannot move out of `other` because it is borrowed
+ --> $DIR/issue-46589.rs:33:17
+ |
+LL | *other = match (*other).get_self() {
+ | -------- borrow of `**other` occurs here
+...
+LL | let c = other;
+ | ^^^^^
+ | |
+ | move out of `other` occurs here
+ | borrow later used here
+
+error: aborting due to 2 previous errors
+
+Some errors occurred: E0499, E0505.
+For more information about an error, try `rustc --explain E0499`.