src/test/run-pass/env-funky-keys.rs

   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
  15 // no-prefer-dynamic
  16
  17 #![feature(convert)]
  18 #![feature(libc)]
  19
  20 extern crate libc;
  21
  22 use libc::c_char;
  23 use libc::execve;
  24 use std::env;
  25 use std::ffi::OsStr;
  26 use std::ptr;
  27
  28 fn main() {
  29     if env::args_os().count() == 2 {
  30         for (key, value) in env::vars_os() {
  31             panic!("found env value {:?} {:?}", key, value);
  32         }
  33         return;
  34     }
  35
  36     let current_exe = env::current_exe().unwrap().into_os_string().to_cstring().unwrap();
  37     let new_env_var = OsStr::new("FOOBAR").to_cstring().unwrap();
  38     let filename: *const c_char = current_exe.as_ptr();
  39     let argv: &[*const c_char] = &[filename, filename, ptr::null()];
  40     let envp: &[*const c_char] = &[new_env_var.as_ptr(), ptr::null()];
  41     unsafe {
  42         execve(filename, &argv[0], &envp[0]);
  43     }
  44     panic!("execve failed");
  45 }