librustc: Remove `~EXPR`, `~TYPE`, and `~PAT` from the language, except

for `~str`/`~[]`.

Note that `~self` still remains, since I forgot to add support for
`Box<self>` before the snapshot.

How to update your code:

* Instead of `~EXPR`, you should write `box EXPR`.

* Instead of `~TYPE`, you should write `Box<Type>`.

* Instead of `~PATTERN`, you should write `box PATTERN`.

[breaking-change]

1 files changed, 3 insertions, 2 deletions

diff --git a/src/libstd/sync/mpsc_queue.rs b/src/libstd/sync/mpsc_queue.rs
index 315e412446d..e05959e2591 100644
--- a/src/libstd/sync/mpsc_queue.rs
+++ b/src/libstd/sync/mpsc_queue.rs
@@ -42,6 +42,7 @@ use cast;
 use kinds::Send;
 use ops::Drop;
 use option::{Option, None, Some};
+use owned::Box;
 use ptr::RawPtr;
 use sync::atomics::{AtomicPtr, Release, Acquire, AcqRel, Relaxed};
 
@@ -120,7 +121,7 @@ impl<T: Send> Queue<T> {
                 assert!((*tail).value.is_none());
                 assert!((*next).value.is_some());
                 let ret = (*next).value.take_unwrap();
-                let _: ~Node<T> = cast::transmute(tail);
+                let _: Box<Node<T>> = cast::transmute(tail);
                 return Data(ret);
             }
 
@@ -145,7 +146,7 @@ impl<T: Send> Drop for Queue<T> {
             let mut cur = self.tail;
             while !cur.is_null() {
                 let next = (*cur).next.load(Relaxed);
-                let _: ~Node<T> = cast::transmute(cur);
+                let _: Box<Node<T>> = cast::transmute(cur);
                 cur = next;
             }
         }