src/test/run-pass/const-negation.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 #![feature(stmt_expr_attributes)]
  12
  13 #[deny(const_err)]
  14
  15 fn main() {
  16     #[cfg(target_pointer_width = "32")]
  17     const I: isize = -2147483648isize;
  18     #[cfg(target_pointer_width = "64")]
  19     const I: isize = -9223372036854775808isize;
  20     assert_eq!(::std::i32::MIN as u64, 0xffffffff80000000);
  21     assert_eq!(-2147483648isize as u64, 0xffffffff80000000);
  22     assert_eq!(::std::i64::MIN as u64, 0x8000000000000000);
  23     #[cfg(target_pointer_width = "64")]
  24     assert_eq!(-9223372036854775808isize as u64, 0x8000000000000000);
  25     #[cfg(target_pointer_width = "32")]
  26     assert_eq!(-9223372036854775808isize as u64, 0);
  27     const J: usize = ::std::i32::MAX as usize;
  28     const K: usize = -1i32 as u32 as usize;
  29     const L: usize = ::std::i32::MIN as usize;
  30     const M: usize = ::std::i64::MIN as usize;
  31     match 5 {
  32         J => {},
  33         K => {},
  34         L => {},
  35         M => {},
  36         _ => {}
  37     }
  38     match 5 {
  39         I => {},
  40         _ => {}
  41     }
  42 }