auto merge of #10628 : huonw/rust/3614, r=alexcrichton

Fixes #3614.

src/test/run-pass/inner-attrs-on-impl.rs

@@ -0,0 +1,33 @@
+// Copyright 2013 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.
+
+
+struct Foo;
+
+impl Foo {
+    #[cfg(cfg_that_surely_doesnt_exist)];
+
+    fn method(&self) -> bool { false }
+}
+
+impl Foo {
+    #[cfg(not(cfg_that_surely_doesnt_exist))];
+
+    // check that we don't eat attributes too eagerly.
+    #[cfg(cfg_that_surely_doesnt_exist)]
+    fn method(&self) -> bool { false }
+
+    fn method(&self) -> bool { true }
+}
+
+
+pub fn main() {
+    assert!(Foo.method());
+}