src/test/compile-fail/issue-2063.rs

   1 // Copyright 2012-2014 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 // test that autoderef of a type like this does not
  12 // cause compiler to loop.  Note that no instances
  13 // of such a type could ever be constructed.
  14
  15 struct t(Box<t>); //~ ERROR this type cannot be instantiated
  16
  17 trait to_str_2 {
  18     fn my_to_string() -> String;
  19 }
  20
  21 // I use an impl here because it will cause
  22 // the compiler to attempt autoderef and then
  23 // try to resolve the method.
  24 impl to_str_2 for t {
  25     fn my_to_string() -> String { "t".to_string() }
  26 }
  27
  28 fn new_t(x: t) {
  29     x.my_to_string();
  30     // (there used to be an error emitted right here as well. It was
  31     // spurious, at best; if `t` did exist as a type, it clearly would
  32     // have an impl of the `to_str_2` trait.)
  33 }
  34
  35 fn main() {
  36 }