compile-fail tests: Add feature attributes to enable box pat/expr syntax in various tests.

src/test/compile-fail/borrowck-loan-in-overloaded-op.rs

@@ -8,6 +8,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+#![feature(box_syntax)]
+
 use std::ops::Add;
 
 #[derive(Clone)]

src/test/compile-fail/borrowck-vec-pattern-nesting.rs

@@ -9,6 +9,7 @@
 // except according to those terms.
 
 #![feature(advanced_slice_patterns)]
+#![feature(box_syntax)]
 
 fn a() {
     let mut vec = [box 1i, box 2, box 3];

src/test/compile-fail/destructure-trait-ref.rs

@@ -11,6 +11,8 @@
 // The regression test for #15031 to make sure destructuring trait
 // reference work properly.
 
+#![feature(box_syntax)]
+
 trait T {}
 impl T for int {}
 

src/test/compile-fail/issue-12116.rs

@@ -8,6 +8,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+#![feature(box_syntax)]
+
 enum IntList {
     Cons(int, Box<IntList>),
     Nil

src/test/compile-fail/issue-14084.rs

@@ -8,6 +8,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+#![feature(box_syntax)]
+
 fn main() {
     box ( () ) 0;
     //~^ ERROR: only the managed heap and exchange heap are currently supported

src/test/compile-fail/issue-3601.rs

@@ -8,6 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+#![feature(box_syntax)]
 
 struct HTMLImageData {
     image: Option<String>

src/test/compile-fail/issue-4972.rs

@@ -8,6 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+#![feature(box_syntax)]
 
 trait MyTrait { }
 

src/test/compile-fail/issue-5100.rs

@@ -8,6 +8,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+#![feature(box_syntax)]
+
 enum A { B, C }
 
 fn main() {

src/test/compile-fail/moves-based-on-type-block-bad.rs

@@ -10,6 +10,8 @@
 
 // ignore-tidy-linelength
 
+#![feature(box_syntax)]
+
 struct S {
     x: Box<E>
 }

src/test/compile-fail/regions-ref-in-fn-arg.rs

@@ -8,6 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+#![feature(box_syntax)]
 
 fn arg_item(box ref x: Box<int>) -> &'static int {
     x //~^ ERROR borrowed value does not live long enough

src/test/compile-fail/unreachable-arm.rs

@@ -10,6 +10,7 @@
 
 // error-pattern:unreachable pattern
 
+#![feature(box_syntax)]
 
 enum foo { a(Box<foo>, int), b(uint), }