From a2e9f0c7fef95bee72c4447b6230c3b7d8c35909 Mon Sep 17 00:00:00 2001
From: "Michael I. Bushnell" <mib@gnu.org>
Date: Wed, 17 Mar 1993 19:48:28 +0000
Subject: Formerly cthreads.h.~2~

---
 libthreads/cthreads.h | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/libthreads/cthreads.h b/libthreads/cthreads.h
index d5fbd401..fed57250 100644
--- a/libthreads/cthreads.h
+++ b/libthreads/cthreads.h
@@ -164,6 +164,9 @@
 #ifndef	_CTHREADS_
 #define	_CTHREADS_ 1
 
+/* MIB XXX */
+#define CTHREAD_DATA
+
 #include <machine/cthreads.h>
 
 #if	c_plusplus || __STDC__
@@ -284,7 +287,7 @@ extern int
 spin_try_lock C_ARG_DECLS((spin_lock_t *p));
 #endif
 
-#define spin_lock(p) if (!spin_try_lock(p)) spin_lock_solid(p); else
+#define spin_lock(p) ({if (!spin_try_lock(p)) spin_lock_solid(p);})
 
 /*
  * Mutex objects.
-- 
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