src/test/compile-fail/type-parameter-defaults-referencing-Self-ppaux.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 a default that references `Self` which is then used in an
  12 // object type. Issue #18956. In this case, the value is supplied by
  13 // the user, but pretty-printing the type during the error message
  14 // caused an ICE.
  15
  16 trait MyAdd<Rhs=Self> { fn add(&self, other: &Rhs) -> Self; }
  17
  18 impl MyAdd for i32 {
  19     fn add(&self, other: &i32) -> i32 { *self + *other }
  20 }
  21
  22 fn main() {
  23     let x: i32 = 5;
  24     let y = x as MyAdd<i32>;
  25     //~^ ERROR E0038
  26     //~| ERROR cast to unsized type: `i32` as `MyAdd<i32>`
  27 }