[PATCH] timer_* and SIGEV_NONE

[Jakub Jelinek]

Hi!

Although timer_create creates a timer with SIGEV_NONE signalling just fine,
timer_settime or timer_delete on such timer causes crashes.
See http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=53494
Fixed thusly:

2001-09-12  Jakub Jelinek  <jakub@redhat.com>

	* sysdeps/pthread/timer_delete.c (timer_delete): Thread may be NULL
	for SIGEV_NONE.
	* sysdeps/pthread/timer_settime.c (timer_settime): Likewise.

--- libc/linuxthreads/sysdeps/pthread/timer_delete.c.jj	Wed Jun 21 06:34:21 2000
+++ libc/linuxthreads/sysdeps/pthread/timer_delete.c	Wed Sep 12 10:38:16 2001
@@ -41,10 +41,9 @@ timer_delete (timerid)
     __set_errno (EINVAL);
   else
     {
-      if (timer->armed)
+      if (timer->armed && timer->thread)
 	{
 	  struct thread_node *thread = timer->thread;
-	  assert (thread != NULL);
 
 	  /* If thread is cancelled while waiting for handler to terminate,
 	     the mutex is unlocked and timer_delete is aborted.  */
--- libc/linuxthreads/sysdeps/pthread/timer_settime.c.jj	Tue Jun 20 02:33:55 2000
+++ libc/linuxthreads/sysdeps/pthread/timer_settime.c	Wed Sep 12 10:48:57 2001
@@ -118,7 +118,8 @@ timer_settime (timerid, flags, value, ov
 
       /* Only need to wake up the thread if timer is inserted
 	 at the head of the queue. */
-      need_wakeup = __timer_thread_queue_timer (thread, timer);
+      if (thread != NULL)
+	need_wakeup = __timer_thread_queue_timer (thread, timer);
       timer->armed = 1;
     }
 

	Jakub