#![cfg(target_thread_local)]
#![unstable(feature = "thread_local_internals", issue = "0")]
-pub unsafe fn register_dtor(t: *mut u8, dtor: unsafe extern fn(*mut u8)) {
+pub unsafe fn register_dtor(t: *mut u8, dtor: unsafe extern "C" fn(*mut u8)) {
use crate::sys_common::thread_local::register_dtor_fallback;
register_dtor_fallback(t, dtor);
}