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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 |
92a42be0 SL |
16 | // no-prefer-dynamic |
17 | ||
18 | #![feature(convert)] | |
19 | #![feature(libc)] | |
20 | ||
21 | extern crate libc; | |
22 | ||
23 | use libc::c_char; | |
24 | use libc::execve; | |
25 | use std::env; | |
26 | use std::ffi::OsStr; | |
27 | use std::ptr; | |
28 | ||
29 | fn 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 | ||
37 | let current_exe = env::current_exe().unwrap().into_os_string().to_cstring().unwrap(); | |
38 | let new_env_var = OsStr::new("FOOBAR").to_cstring().unwrap(); | |
39 | let filename: *const c_char = current_exe.as_ptr(); | |
40 | let argv: &[*const c_char] = &[filename, filename, ptr::null()]; | |
41 | let envp: &[*const c_char] = &[new_env_var.as_ptr(), ptr::null()]; | |
42 | unsafe { | |
43 | execve(filename, &argv[0], &envp[0]); | |
44 | } | |
45 | panic!("execve failed"); | |
46 | } |