src/test/ui/run-pass/iterators/iter-step-overflow-debug.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 // run-pass
  12 // ignore-wasm32-bare compiled with panic=abort by default
  13 // compile-flags: -C debug_assertions=yes
  14
  15 use std::panic;
  16
  17 fn main() {
  18     let r = panic::catch_unwind(|| {
  19         let mut it = u8::max_value()..;
  20         it.next().unwrap(); // 255
  21         it.next().unwrap();
  22     });
  23     assert!(r.is_err());
  24
  25     let r = panic::catch_unwind(|| {
  26         let mut it = i8::max_value()..;
  27         it.next().unwrap(); // 127
  28         it.next().unwrap();
  29     });
  30     assert!(r.is_err());
  31 }