src/test/compile-fail/const-eval-overflow-3.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 expression.
  15
  16 // FIXME (#23926): the error output is not consistent between a
  17 // self-hosted and a cross-compiled setup; therefore resorting to
  18 // error-pattern for now.
  19
  20 // error-pattern: expected constant integer for repeat count, but attempted to add with overflow
  21
  22 #![allow(unused_imports)]
  23
  24 use std::fmt;
  25 use std::{i8, i16, i32, i64, isize};
  26 use std::{u8, u16, u32, u64, usize};
  27
  28 const A_I8_I
  29     : [u32; (i8::MAX as usize) + 1]
  30     = [0; (i8::MAX + 1) as usize];
  31
  32 fn main() {
  33     foo(&A_I8_I[..]);
  34 }
  35
  36 fn foo<T:fmt::Debug>(x: T) {
  37     println!("{:?}", x);
  38 }