Make ui/binop-move-semantics.rs robust w.r.t. NLL.

Author: pnkfelix

src/test/ui/binop/binop-move-semantics.nll.stderr

@@ -20,6 +20,29 @@ LL |     x.clone();  //~ ERROR: use of moved value
    |
    = note: move occurs because `x` has type `T`, which does not implement the `Copy` trait
 
+error[E0505]: cannot move out of `x` because it is borrowed
+  --> $DIR/binop-move-semantics.rs:31:5
+   |
+LL |     let m = &x;
+   |             -- borrow of `x` occurs here
+...
+LL |     x  //~ ERROR: cannot move out of `x` because it is borrowed
+   |     ^ move out of `x` occurs here
+...
+LL |     use_mut(n); use_imm(m);
+   |                         - borrow later used here
+
+error[E0505]: cannot move out of `y` because it is borrowed
+  --> $DIR/binop-move-semantics.rs:33:5
+   |
+LL |     let n = &mut y;
+   |             ------ borrow of `y` occurs here
+...
+LL |     y;  //~ ERROR: cannot move out of `y` because it is borrowed
+   |     ^ move out of `y` occurs here
+LL |     use_mut(n); use_imm(m);
+   |             - borrow later used here
+
 error[E0507]: cannot move out of borrowed content
   --> $DIR/binop-move-semantics.rs:40:5
    |
@@ -62,7 +85,7 @@ LL | |     &mut f;  //~ ERROR: cannot borrow `f` as mutable because it is also b
    |       |    immutable borrow later used here
    |       mutable borrow occurs here
 
-error: aborting due to 6 previous errors
+error: aborting due to 8 previous errors
 
-Some errors occurred: E0382, E0502, E0507.
+Some errors occurred: E0382, E0502, E0505, E0507.
 For more information about an error, try `rustc --explain E0382`.

src/test/ui/binop/binop-move-semantics.rs

@@ -31,17 +31,17 @@ fn move_borrowed<T: Add<Output=()>>(x: T, mut y: T) {
     x  //~ ERROR: cannot move out of `x` because it is borrowed
     +
     y;  //~ ERROR: cannot move out of `y` because it is borrowed
+    use_mut(n); use_imm(m);
 }
-
 fn illegal_dereference<T: Add<Output=()>>(mut x: T, y: T) {
     let m = &mut x;
     let n = &y;
 
     *m  //~ ERROR: cannot move out of borrowed content
     +
     *n;  //~ ERROR: cannot move out of borrowed content
+    use_imm(n); use_mut(m);
 }
-
 struct Foo;
 
 impl<'a, 'b> Add<&'b Foo> for &'a mut Foo {
@@ -73,3 +73,6 @@ fn immut_plus_mut() {
 }
 
 fn main() {}
+
+fn use_mut<T>(_: &mut T) { }
+fn use_imm<T>(_: &T) { }