src/test/compile-fail/const-eval-overflow-4b.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 // Evaluation of constants in array-elem count goes through different
  12 // compiler control-flow paths.
  13 //
  14 // This test is checking the count in an array type.
  15
  16 #![allow(unused_imports)]
  17
  18 use std::{i8, i16, i32, i64, isize};
  19 use std::{u8, u16, u32, u64, usize};
  20
  21 const A_I8_T
  22     : [u32; (i8::MAX as i8 + 1u8) as usize]
  23     //~^ ERROR mismatched types
  24     //~| expected i8, found u8
  25     //~| ERROR the trait bound `i8: std::ops::Add<u8>` is not satisfied
  26     = [0; (i8::MAX as usize) + 1];
  27
  28
  29 const A_CHAR_USIZE
  30     : [u32; 5u8 as char as usize]
  31     = [0; 5];
  32
  33
  34 const A_BAD_CHAR_USIZE
  35     : [u32; 5i8 as char as usize]
  36     //~^ ERROR only `u8` can be cast as `char`, not `i8`
  37     = [0; 5];
  38
  39 fn main() {}