Added stmt_expr_attribute feature gate

src/test/compile-fail/stmt_expr_attrs_no_feature.rs

@@ -0,0 +1,151 @@
+// Copyright 2015 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(custom_attribute)]
+#![feature(associated_consts)]
+
+macro_rules! stmt_mac {
+    () => {
+        fn b() {}
+    }
+}
+
+fn main() {
+    #[attr]
+    fn a() {}
+
+    #[attr] //~ ERROR 15701
+    {
+
+    }
+
+    #[attr] //~ ERROR 15701
+    5;
+
+    #[attr] //~ ERROR 15701
+    stmt_mac!();
+}
+
+// Check that cfg works right
+
+#[cfg(unset)]
+fn c() {
+    #[attr]
+    5;
+}
+
+#[cfg(not(unset))]
+fn j() {
+    #[attr] //~ ERROR 15701
+    5;
+}
+
+#[cfg_attr(not(unset), cfg(unset))]
+fn d() {
+    #[attr]
+    8;
+}
+
+#[cfg_attr(not(unset), cfg(not(unset)))]
+fn i() {
+    #[attr] //~ ERROR 15701
+    8;
+}
+
+// check that macro expansion and cfg works right
+
+macro_rules! item_mac {
+    ($e:ident) => {
+        fn $e() {
+            #[attr] //~ ERROR 15701
+            42;
+
+            #[cfg(unset)]
+            fn f() {
+                #[attr]
+                5;
+            }
+
+            #[cfg(not(unset))]
+            fn k() {
+                #[attr] //~ ERROR 15701
+                5;
+            }
+
+            #[cfg_attr(not(unset), cfg(unset))]
+            fn g() {
+                #[attr]
+                8;
+            }
+
+            #[cfg_attr(not(unset), cfg(not(unset)))]
+            fn h() {
+                #[attr] //~ ERROR 15701
+                8;
+            }
+
+        }
+    }
+}
+
+item_mac!(e);
+
+// check that the gate visitor works right:
+
+extern {
+    #[cfg(unset)]
+    fn x(a: [u8; #[attr] 5]);
+    fn y(a: [u8; #[attr] 5]); //~ ERROR 15701
+}
+
+struct Foo;
+impl Foo {
+    #[cfg(unset)]
+    const X: u8 = #[attr] 5;
+    const Y: u8 = #[attr] 5; //~ ERROR 15701
+}
+
+trait Bar {
+    #[cfg(unset)]
+    const X: [u8; #[attr] 5];
+    const Y: [u8; #[attr] 5]; //~ ERROR 15701
+}
+
+struct Joyce {
+    #[cfg(unset)]
+    field: [u8; #[attr] 5],
+    field2: [u8; #[attr] 5] //~ ERROR 15701
+}
+
+struct Walky(
+    #[cfg(unset)] [u8; #[attr] 5],
+    [u8; #[attr] 5] //~ ERROR 15701
+);
+
+enum Mike {
+    Happy(
+        #[cfg(unset)] [u8; #[attr] 5],
+        [u8; #[attr] 5] //~ ERROR 15701
+    ),
+    Angry {
+        #[cfg(unset)]
+        field: [u8; #[attr] 5],
+        field2: [u8; #[attr] 5] //~ ERROR 15701
+    }
+}
+
+fn pat() {
+    match 5 {
+        #[cfg(unset)]
+        5 => #[attr] (),
+        6 => #[attr] (), //~ ERROR 15701
+        _ => (),
+    }
+}

src/test/pretty/stmt_expr_attributes.rs

@@ -13,6 +13,7 @@
 #![feature(custom_attribute)]
 #![feature(box_syntax)]
 #![feature(placement_in_syntax)]
+#![feature(stmt_expr_attributes)]
 
 fn main() { }
 

src/test/run-pass/cfg_stmt_expr.rs

@@ -9,6 +9,7 @@
 // except according to those terms.
 
 #![deny(non_snake_case)]
+#![feature(stmt_expr_attributes)]
 
 fn main() {
     let a = 413;

src/test/run-pass/stmt_expr_attr_macro_parse.rs

@@ -0,0 +1,22 @@
+// Copyright 2015 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.
+
+macro_rules! m {
+    ($e:expr) => {
+        "expr includes attr"
+    };
+    (#[$attr:meta] $e:expr) => {
+        "expr excludes attr"
+    }
+}
+
+fn main() {
+    assert_eq!(m!(#[attr] 1 + 1), "expr includes attr");
+}