src/test/ui/env-funky-keys.rs

   1 // run-pass
   2 // Ignore this test on Android, because it segfaults there.
   3
   4 // ignore-android
   5 // ignore-windows
   6 // ignore-emscripten no execve
   7 // ignore-sgx no execve
   8 // ignore-vxworks no execve
   9 // ignore-fuchsia no 'execve'
  10 // no-prefer-dynamic
  11
  12 #![feature(rustc_private)]
  13
  14 extern crate libc;
  15
  16 use libc::c_char;
  17 use libc::execve;
  18 use std::env;
  19 use std::ffi::CString;
  20 use std::os::unix::prelude::*;
  21 use std::ptr;
  22
  23 fn main() {
  24     if env::args_os().count() == 2 {
  25         for (key, value) in env::vars_os() {
  26             panic!("found env value {:?} {:?}", key, value);
  27         }
  28         return;
  29     }
  30
  31     let current_exe = CString::new(env::current_exe()
  32                                        .unwrap()
  33                                        .as_os_str()
  34                                        .as_bytes()).unwrap();
  35     let new_env_var = CString::new("FOOBAR").unwrap();
  36     let filename: *const c_char = current_exe.as_ptr();
  37     let argv: &[*const c_char] = &[filename, filename, ptr::null()];
  38     let envp: &[*const c_char] = &[new_env_var.as_ptr(), ptr::null()];
  39     unsafe {
  40         execve(filename, &argv[0], &envp[0]);
  41     }
  42     panic!("execve failed");
  43 }