message: comment out sem_open
diff: @@ -25,11 +25,13 @@ pub extern "C" fn sem_destroy(sem: *mut sem_t) -> c_int {
  unimplemented!();
  }
  -#[no_mangle]
  -pub extern "C" fn sem_open(name: *const c_char,
  - oflag: c_int, ...) -> *mut sem_t {
  - unimplemented!();
  -}
  +/*
  + *#[no_mangle]
  + *pub extern "C" fn sem_open(name: *const c_char,
  + * oflag: c_int, ...) -> *mut sem_t {
  + * unimplemented!();
  + *}
  + */
  #[no_mangle]
  pub extern "C" fn sem_close(sem: *mut sem_t) -> c_int {
  