From d29196a493b0d63ea543af2cab1db062ae39fce2 Mon Sep 17 00:00:00 2001
From: Jakob Kaivo <jkk@ung.org>
Date: Tue, 26 Apr 2022 10:59:50 -0400
Subject: use C2x style header versioning for include guards

---
 stdio.h | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

(limited to 'stdio.h')

diff --git a/stdio.h b/stdio.h
index 964ee74..d910fe8 100644
--- a/stdio.h
+++ b/stdio.h
@@ -1,5 +1,9 @@
-#ifndef __STDIO_H__
-#define __STDIO_H__
+#ifndef __STDC_VERSION_STDIO_H__
+#if defined __STDC_VERSION__
+#define __STDC_VERSION_STDIO_H__ __STDC_VERSION__
+#else
+#define __STDC_VERSION_STDIO_H__ 1
+#endif
 
 /*
 UNG's Not GNU
-- 
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