[PATCH] Fix pthread_cond_wait bug on !i386 !x86_64

[Jakub Jelinek]

Hi!

I hope this is the only cause of the random failures of tst-cond{16,17,18}
on pthread_cond_*.c using architectures.
Certainly on 7way PPC I managed to run 71 tst-cond18 runs without a failure
(while previously it took at most 20 to fail) and so far 16 tst-cond16 runs.

2004-05-21  Jakub Jelinek  <jakub@redhat.com>

	* sysdeps/pthread/pthread_cond_wait.c (__pthread_cond_wait): Compare
	__broadcast_seq with bc_seq after acquiring internal lock instead of
	before it.

--- libc/nptl/sysdeps/pthread/pthread_cond_wait.c.jj	2004-05-19 22:58:46.000000000 +0200
+++ libc/nptl/sysdeps/pthread/pthread_cond_wait.c	2004-05-21 17:30:54.654099109 +0200
@@ -143,13 +143,13 @@ __pthread_cond_wait (cond, mutex)
       /* Disable asynchronous cancellation.  */
       __pthread_disable_asynccancel (cbuffer.oldtype);
 
+      /* We are going to look at shared data again, so get the lock.  */
+      lll_mutex_lock (cond->__data.__lock);
+
       /* If a broadcast happened, we are done.  */
       if (cbuffer.bc_seq != cond->__data.__broadcast_seq)
 	goto bc_out;
 
-      /* We are going to look at shared data again, so get the lock.  */
-      lll_mutex_lock (cond->__data.__lock);
-
       /* Check whether we are eligible for wakeup.  */
       val = cond->__data.__wakeup_seq;
     }

	Jakub