src/test/ui/run-pass/issues/issue-29147.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 // run-pass
  12 #![recursion_limit="1024"]
  13
  14 use std::mem;
  15
  16 pub struct S0<T>(T,T);
  17 pub struct S1<T>(Option<Box<S0<S0<T>>>>,Option<Box<S0<S0<T>>>>);
  18 pub struct S2<T>(Option<Box<S1<S1<T>>>>,Option<Box<S1<S1<T>>>>);
  19 pub struct S3<T>(Option<Box<S2<S2<T>>>>,Option<Box<S2<S2<T>>>>);
  20 pub struct S4<T>(Option<Box<S3<S3<T>>>>,Option<Box<S3<S3<T>>>>);
  21 pub struct S5<T>(Option<Box<S4<S4<T>>>>,Option<Box<S4<S4<T>>>>,Option<T>);
  22
  23 trait Foo { fn xxx(&self); }
  24 /// some local of #[fundamental] trait
  25 trait Bar {}
  26
  27 impl<T> Foo for T where T: Bar, T: Sync {
  28     fn xxx(&self) {}
  29 }
  30
  31 impl Foo for S5<u8> { fn xxx(&self) {} }
  32
  33 fn main() {
  34     let s = S5(None,None,None);
  35     s.xxx();
  36     assert_eq!(mem::size_of_val(&s.2), mem::size_of::<Option<u8>>());
  37 }