Revert "std: Re-enable at_exit()"

This reverts commit 9e224c2bf18ebf8f871efb2e1aba43ed7970ebb7.

Conflicts:
	src/libstd/sys/windows/os.rs

1 files changed, 2 insertions, 9 deletions

diff --git a/src/libstd/sys/unix/timer.rs b/src/libstd/sys/unix/timer.rs
index 150ec6aad8a..c0ef89666c0 100644
--- a/src/libstd/sys/unix/timer.rs
+++ b/src/libstd/sys/unix/timer.rs
@@ -100,7 +100,7 @@ pub fn now() -> u64 {
 fn helper(input: libc::c_int, messages: Receiver<Req>, _: ()) {
     let mut set: c::fd_set = unsafe { mem::zeroed() };
 
-    let fd = FileDesc::new(input, true);
+    let mut fd = FileDesc::new(input, true);
     let mut timeout: libc::timeval = unsafe { mem::zeroed() };
 
     // active timers are those which are able to be selected upon (and it's a
@@ -168,15 +168,8 @@ fn helper(input: libc::c_int, messages: Receiver<Req>, _: ()) {
             1 => {
                 loop {
                     match messages.try_recv() {
-                        // Once we've been disconnected it means the main thread
-                        // is exiting (at_exit has run). We could still have
-                        // active timers for other threads, so we're just going
-                        // to drop them all on the floor. This is all we can
-                        // really do, however, to prevent resource leakage. The
-                        // remaining timers will likely start panicking quickly
-                        // as they attempt to re-use this thread but are
-                        // disallowed to do so.
                         Err(comm::Disconnected) => {
+                            assert!(active.len() == 0);
                             break 'outer;
                         }