src/test/run-pass/issue-37291/auxiliary/lib.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 #![crate_type = "lib"]
  12
  13 use std::ops::Mul;
  14
  15 pub trait A {}
  16 pub trait B {
  17     type AT: A;
  18 }
  19 pub trait C {
  20     type BT: B;
  21 }
  22
  23 pub struct AV;
  24 impl A for AV {}
  25
  26 pub struct BV;
  27 impl B for BV {
  28     type AT = AV;
  29 }
  30
  31 pub struct CV;
  32 impl C for CV {
  33     type BT = BV;
  34 }
  35
  36 pub struct WrapperB<T>(pub T);
  37 pub struct WrapperC<T>(pub T);
  38
  39 impl<C1> Mul<WrapperB<<C1::BT as B>::AT>> for WrapperC<C1>
  40     where C1: C
  41 {
  42     type Output = u8;
  43     fn mul(self, _: WrapperB<<C1::BT as B>::AT>) -> Self::Output {
  44         loop {}
  45     }
  46 }
  47 impl<C1> Mul<WrapperC<C1>> for WrapperC<C1> {
  48     type Output = u8;
  49     fn mul(self, _: WrapperC<C1>) -> Self::Output {
  50         loop {}
  51     }
  52 }