src/test/compile-fail/lint-type-overflow.rs

   1 // Copyright 2013 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
  12 #![deny(overflowing_literals)]
  13
  14 fn test(x: i8) {
  15     println!("x {}", x);
  16 }
  17
  18 #[allow(unused_variables)]
  19 fn main() {
  20     let x1: u8 = 255; // should be OK
  21     let x1: u8 = 256; //~ error: literal out of range for u8
  22
  23     let x1 = 255_u8; // should be OK
  24     let x1 = 256_u8; //~ error: literal out of range for u8
  25
  26     let x2: i8 = -128; // should be OK
  27     let x1: i8 = 128; //~ error: literal out of range for i8
  28
  29     let x3: i8 = -129; //~ error: literal out of range for i8
  30     let x3: i8 = -(129); //~ error: literal out of range for i8
  31     let x3: i8 = -{129}; //~ error: literal out of range for i8
  32
  33     test(1000); //~ error: literal out of range for i8
  34
  35     let x = 128_i8; //~ error: literal out of range for i8
  36     let x = 127_i8;
  37     let x = -128_i8;
  38     let x = -(128_i8);
  39     let x = -129_i8; //~ error: literal out of range for i8
  40
  41     let x: i32 = 2147483647; // should be OK
  42     let x = 2147483647_i32; // should be OK
  43     let x: i32 = 2147483648; //~ error: literal out of range for i32
  44     let x = 2147483648_i32; //~ error: literal out of range for i32
  45     let x: i32 = -2147483648; // should be OK
  46     let x = -2147483648_i32; // should be OK
  47     let x: i32 = -2147483649; //~ error: literal out of range for i32
  48     let x = -2147483649_i32; //~ error: literal out of range for i32
  49     let x = 2147483648; //~ error: literal out of range for i32
  50
  51     let x = 9223372036854775808_i64; //~ error: literal out of range for i64
  52     let x = -9223372036854775808_i64; // should be OK
  53     let x = 18446744073709551615_i64; //~ error: literal out of range for i64
  54     let x: i64 = -9223372036854775809; //~ error: literal out of range for i64
  55     let x = -9223372036854775809_i64; //~ error: literal out of range for i64
  56 }