From 115fec062ccf7c6d72c8d5f64b7a5d84c9fb2dd8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=8D=9C=E9=83=A8=E6=98=8C=E5=B9=B3?=
 <shyouhei@ruby-lang.org>
Date: Fri, 7 Feb 2020 14:14:05 +0900
Subject: more on NULL versus functions.

Function pointers are not void*.  See also
ce4ea956d24eab5089a143bba38126f2b11b55b6
8427fca49bd85205f5a8766292dd893f003c0e48
---
 thread_sync.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'thread_sync.c')

diff --git a/thread_sync.c b/thread_sync.c
index efe295e64c..7af5172818 100644
--- a/thread_sync.c
+++ b/thread_sync.c
@@ -78,7 +78,7 @@ static const char* rb_mutex_unlock_th(rb_mutex_t *mutex, rb_thread_t *th);
  *
  */
 
-#define mutex_mark NULL
+#define mutex_mark ((void(*)(void*))0)
 
 static size_t
 rb_mutex_num_waiting(rb_mutex_t *mutex)
-- 
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