src/test/run-pass/c-stack-returning-int64.rs

   1 // Copyright 2012 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
  13 #![feature(libc, std_misc)]
  14
  15 extern crate libc;
  16
  17 use std::ffi::CString;
  18
  19 mod mlibc {
  20     use libc::{c_char, c_long, c_longlong};
  21
  22     extern {
  23         pub fn atol(x: *const c_char) -> c_long;
  24         pub fn atoll(x: *const c_char) -> c_longlong;
  25     }
  26 }
  27
  28 fn atol(s: String) -> isize {
  29     let c = CString::new(s).unwrap();
  30     unsafe { mlibc::atol(c.as_ptr()) as isize }
  31 }
  32
  33 fn atoll(s: String) -> i64 {
  34     let c = CString::new(s).unwrap();
  35     unsafe { mlibc::atoll(c.as_ptr()) as i64 }
  36 }
  37
  38 pub fn main() {
  39     assert_eq!(atol("1024".to_string()) * 10, atol("10240".to_string()));
  40     assert!((atoll("11111111111111111".to_string()) * 10) ==
  41              atoll("111111111111111110".to_string()));
  42 }