Rename #[mutable] to #[no_freeze]

Author: brson

src/libextra/arc.rs

@@ -276,7 +276,8 @@ struct RWARCInner<T> { lock: RWlock, failed: bool, data: T }
  *
  * Unlike mutex_arcs, rw_arcs are safe, because they cannot be nested.
  */
-#[mutable]
+#[mutable] // XXX remove after snap
+#[no_freeze]
 struct RWARC<T> {
     x: UnsafeAtomicRcBox<RWARCInner<T>>,
 }

src/libextra/arena.rs

@@ -65,7 +65,8 @@ struct Chunk {
     is_pod: bool,
 }
 
-#[mutable]
+#[mutable] // XXX remove after snap
+#[no_freeze]
 pub struct Arena {
     // The head is separated out from the list as a unbenchmarked
     // microoptimization, to avoid needing to case on the list to

src/libextra/rc.rs

@@ -169,7 +169,8 @@ struct RcMutBox<T> {
 /// Mutable reference counted pointer type
 #[non_owned]
 #[no_send]
-#[mutable]
+#[mutable] // XXX remove after snap
+#[no_freeze]
 #[unsafe_no_drop_flag]
 pub struct RcMut<T> {
     priv ptr: *mut RcMutBox<T>,

src/librustc/middle/ty.rs

@@ -2204,7 +2204,7 @@ pub fn type_contents(cx: ctxt, ty: t) -> TypeContents {
     }
 
     fn apply_tc_attr(cx: ctxt, did: def_id, mut tc: TypeContents) -> TypeContents {
-        if has_attr(cx, did, "mutable") {
+        if has_attr(cx, did, "no_freeze") {
             tc = tc + TC_MUTABLE;
         }
         if has_attr(cx, did, "no_send") {

src/libstd/cell.rs

@@ -22,7 +22,8 @@ A dynamic, mutable location.
 Similar to a mutable option type, but friendlier.
 */
 
-#[mutable]
+#[mutable] // XXX remove after snap
+#[no_freeze]
 #[deriving(Clone, DeepClone, Eq)]
 #[allow(missing_doc)]
 pub struct Cell<T> {

src/test/compile-fail/mutable-enum.rs

@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-#[mutable]
+#[no_freeze]
 enum Foo { A }
 
 fn bar<T: Freeze>(_: T) {}

src/test/compile-fail/mutable-struct.rs

@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-#[mutable]
+#[no_freeze]
 struct Foo { a: int }
 
 fn bar<T: Freeze>(_: T) {}