Hooray! 19982 finally works the way people wanted in December 2014 :)

src/test/ui/issues/issue-19982-2.rs

@@ -1,33 +0,0 @@
-// 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.
-
-// compile-pass
-// pretty-expanded FIXME #23616
-
-#![feature(fn_traits, unboxed_closures)]
-
-#[allow(dead_code)]
-struct Foo;
-
-impl<'a> Fn<(&'a (),)> for Foo {
-    extern "rust-call" fn call(&self, (_,): (&(),)) {}
-}
-
-impl<'a> FnMut<(&'a (),)> for Foo {
-    extern "rust-call" fn call_mut(&mut self, (_,): (&(),)) {}
-}
-
-impl<'a> FnOnce<(&'a (),)> for Foo {
-    type Output = ();
-
-    extern "rust-call" fn call_once(self, (_,): (&(),)) {}
-}
-
-fn main() {}

src/test/ui/issues/issue-19982.rs

@@ -8,10 +8,25 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-#![feature(unboxed_closures)]
+// compile-pass
 
+#![feature(fn_traits, unboxed_closures)]
+
+#[allow(dead_code)]
 struct Foo;
 
-impl Fn<(&(),)> for Foo { } //~ ERROR missing lifetime specifier
+impl Fn<(&(),)> for Foo {
+    extern "rust-call" fn call(&self, (_,): (&(),)) {}
+}
+
+impl FnMut<(&(),)> for Foo {
+    extern "rust-call" fn call_mut(&mut self, (_,): (&(),)) {}
+}
+
+impl FnOnce<(&(),)> for Foo {
+    type Output = ();
+
+    extern "rust-call" fn call_once(self, (_,): (&(),)) {}
+}
 
 fn main() {}

src/test/ui/issues/issue-19982.stderr

@@ -1,9 +0,0 @@
-error[E0106]: missing lifetime specifier
-  --> $DIR/issue-19982.rs:15:10
-   |
-LL | impl Fn<(&(),)> for Foo { } //~ ERROR missing lifetime specifier
-   |          ^ expected lifetime parameter
-
-error: aborting due to previous error
-
-For more information about this error, try `rustc --explain E0106`.