src/test/compile-fail/unboxed-closure-region.rs

   1 // Copyright 2014 The Rust Project Developers. See the COPYRIGHT
   2 // file at the top-level directory of this distribution and at
   3 // http://rust-lang.org/COPYRIGHT.
   4 //
   5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
   6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
   8 // option. This file may not be copied, modified, or distributed
   9 // except according to those terms.
  10
  11 #![feature(unboxed_closures)]
  12
  13 // Test that an unboxed closure that captures a free variable by
  14 // reference cannot escape the region of that variable.
  15 fn main() {
  16     let _f = {
  17         let x = 0us;
  18         |:| x //~ ERROR cannot infer an appropriate lifetime due to conflicting requirements
  19     };
  20 }