src/test/run-pass/issue-19244.rs

   1 // Copyright 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
  12 struct MyStruct { field: usize }
  13 struct Nested { nested: MyStruct }
  14 struct Mix2 { nested: ((usize,),) }
  15
  16 const STRUCT: MyStruct = MyStruct { field: 42 };
  17 const TUP: (usize,) = (43,);
  18 const NESTED_S: Nested = Nested { nested: MyStruct { field: 5 } };
  19 const NESTED_T: ((usize,),) = ((4,),);
  20 const MIX_1: ((Nested,),) = ((Nested { nested: MyStruct { field: 3 } },),);
  21 const MIX_2: Mix2 = Mix2 { nested: ((2,),) };
  22 const INSTANT_1: usize = (MyStruct { field: 1 }).field;
  23 const INSTANT_2: usize = (0,).0;
  24
  25 fn main() {
  26     let a = [0; STRUCT.field];
  27     let b = [0; TUP.0];
  28     let c = [0; NESTED_S.nested.field];
  29     let d = [0; (NESTED_T.0).0];
  30     let e = [0; (MIX_1.0).0.nested.field];
  31     let f = [0; (MIX_2.nested.0).0];
  32     let g = [0; INSTANT_1];
  33     let h = [0; INSTANT_2];
  34
  35     assert_eq!(a.len(), 42);
  36     assert_eq!(b.len(), 43);
  37     assert_eq!(c.len(), 5);
  38     assert_eq!(d.len(), 4);
  39     assert_eq!(e.len(), 3);
  40     assert_eq!(f.len(), 2);
  41     assert_eq!(g.len(), 1);
  42     assert_eq!(h.len(), 0);
  43 }