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Imported Upstream version 1.9.0+dfsg1
[rustc.git] / src / test / run-pass / env-funky-keys.rs
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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// Ignore this test on Android, because it segfaults there.
12
13// ignore-android
14// ignore-windows
7453a54e 15// ignore-emscripten
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16// no-prefer-dynamic
17
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18#![feature(libc)]
19
20extern crate libc;
21
22use libc::c_char;
23use libc::execve;
24use std::env;
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25use std::ffi::CString;
26use std::os::unix::prelude::*;
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27use std::ptr;
28
29fn main() {
30 if env::args_os().count() == 2 {
31 for (key, value) in env::vars_os() {
32 panic!("found env value {:?} {:?}", key, value);
33 }
34 return;
35 }
36
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37 let current_exe = CString::new(env::current_exe()
38 .unwrap()
39 .as_os_str()
40 .as_bytes()).unwrap();
41 let new_env_var = CString::new("FOOBAR").unwrap();
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42 let filename: *const c_char = current_exe.as_ptr();
43 let argv: &[*const c_char] = &[filename, filename, ptr::null()];
44 let envp: &[*const c_char] = &[new_env_var.as_ptr(), ptr::null()];
45 unsafe {
46 execve(filename, &argv[0], &envp[0]);
47 }
48 panic!("execve failed");
49}