If the initial thread calls pthread_exit(), don't overwrite its thread

structure, as the 'tid' member there is used by other parts of
librthread to determine whether the current thread is the initial thread

diff --git a/lib/librthread/rthread.c b/lib/librthread/rthread.c
index 5e8a88d..97b05fc 100644 (file)
--- a/lib/librthread/rthread.c
+++ b/lib/librthread/rthread.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: rthread.c,v 1.35 2008/06/05 21:06:11 kurt Exp $ */
+/*     $OpenBSD: rthread.c,v 1.36 2008/08/14 05:15:41 guenther Exp $ */
 /*
  * Copyright (c) 2004,2005 Ted Unangst <tedu@openbsd.org>
  * All Rights Reserved.
@@ -146,9 +146,11 @@ static void
 _rthread_free(pthread_t thread)
 {
        /* catch wrongdoers for the moment */
-       memset(thread, 0xd0, sizeof(*thread));
-       if (thread != &_initial_thread)
+       if (thread != &_initial_thread) {
+               /* initial_thread.tid must remain valid */
+               memset(thread, 0xd0, sizeof(*thread));
                free(thread);
+       }
 }
 
 static void