src/test/ui/run-pass/functions-closures/closure-expected-type/expect-infer-supply-two-infers.rs

   1 // Copyright 2016 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 // run-pass
  12 fn with_closure<A, F>(_: F)
  13     where F: FnOnce(Vec<A>, A)
  14 {
  15 }
  16
  17 fn expect_free_supply_free<'x>(x: &'x u32) {
  18     with_closure(|mut x: Vec<_>, y| {
  19         // Shows that the call to `x.push()` is influencing type of `y`...
  20         x.push(22_u32);
  21
  22         // ...since we now know the type of `y` and can resolve the method call.
  23         y.wrapping_add(1);
  24     });
  25 }
  26
  27 fn main() { }