From a14611cd54d2ac02daad5ccfe99fc3ec9b0818bd Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Wed, 26 Oct 2022 10:53:10 +0900
Subject: Fix -Wundef warnings

---
 include/ruby/util.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'include/ruby/util.h')

diff --git a/include/ruby/util.h b/include/ruby/util.h
index f0ea874322..e8727a3200 100644
--- a/include/ruby/util.h
+++ b/include/ruby/util.h
@@ -19,7 +19,7 @@
 # include <stddef.h>                       /* size_t */
 #endif
 
-#if HAVE_SYS_TYPES_H
+#ifdef HAVE_SYS_TYPES_H
 # include <sys/types.h>                    /* ssize_t */
 #endif
 
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