src/test/run-pass/unboxed-closures-infer-upvar.rs

   1 // Copyright 2015 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 // Test that the type variable in the type(`Vec<_>`) of a closed over
  12 // variable does not interfere with type inference.
  13
  14
  15 fn f<F: FnMut()>(mut f: F) {
  16     f();
  17 }
  18
  19 fn main() {
  20     let mut v: Vec<_> = vec![];
  21     f(|| v.push(0));
  22     assert_eq!(v, [0]);
  23 }