src/test/run-pass/project-cache-issue-37154.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 // Regression test for #37154: the problem here was that the cache
  12 // results in a false error because it was caching skolemized results
  13 // even after those skolemized regions had been popped.
  14
  15 trait Foo {
  16     fn method(&self) {}
  17 }
  18
  19 struct Wrapper<T>(T);
  20
  21 impl<T> Foo for Wrapper<T> where for<'a> &'a T: IntoIterator<Item=&'a ()> {}
  22
  23 fn f(x: Wrapper<Vec<()>>) {
  24     x.method(); // This works.
  25     x.method(); // error: no method named `method`
  26 }
  27
  28 fn main() { }