src/test/run-pass/consts/const-block.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 // run-pass
  12
  13 #![allow(dead_code)]
  14 #![allow(unused_unsafe)]
  15
  16 use std::marker::Sync;
  17
  18 struct Foo {
  19     a: usize,
  20     b: *const ()
  21 }
  22
  23 unsafe impl Sync for Foo {}
  24
  25 fn foo<T>(a: T) -> T {
  26     a
  27 }
  28
  29 static BLOCK_INTEGRAL: usize = { 1 };
  30 static BLOCK_EXPLICIT_UNIT: () = { () };
  31 static BLOCK_IMPLICIT_UNIT: () = { };
  32 static BLOCK_FLOAT: f64 = { 1.0 };
  33 static BLOCK_ENUM: Option<usize> = { Some(100) };
  34 static BLOCK_STRUCT: Foo = { Foo { a: 12, b: 0 as *const () } };
  35 static BLOCK_UNSAFE: usize = unsafe { 1000 };
  36
  37 static BLOCK_FN_INFERRED: fn(usize) -> usize = { foo };
  38
  39 static BLOCK_FN: fn(usize) -> usize = { foo::<usize> };
  40
  41 static BLOCK_ENUM_CONSTRUCTOR: fn(usize) -> Option<usize> = { Some };
  42
  43 pub fn main() {
  44     assert_eq!(BLOCK_INTEGRAL, 1);
  45     assert_eq!(BLOCK_EXPLICIT_UNIT, ());
  46     assert_eq!(BLOCK_IMPLICIT_UNIT, ());
  47     assert_eq!(BLOCK_FLOAT, 1.0_f64);
  48     assert_eq!(BLOCK_STRUCT.a, 12);
  49     assert_eq!(BLOCK_STRUCT.b, 0 as *const ());
  50     assert_eq!(BLOCK_ENUM, Some(100));
  51     assert_eq!(BLOCK_UNSAFE, 1000);
  52     assert_eq!(BLOCK_FN_INFERRED(300), 300);
  53     assert_eq!(BLOCK_FN(300), 300);
  54     assert_eq!(BLOCK_ENUM_CONSTRUCTOR(200), Some(200));
  55 }