From 53a9c705e7df4e8a5e35be325bcd939c59d64e04 Mon Sep 17 00:00:00 2001
From: Jim Huang <jserv.tw@gmail.com>
Date: Thu, 7 Dec 2023 08:23:01 +0800
Subject: [PATCH] Address the support of typeof operator

As of C23, typeof is now included as part of the C standard.
---
 src/common.h | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/common.h b/src/common.h
index eb65952d..b4c2ab98 100644
--- a/src/common.h
+++ b/src/common.h
@@ -109,7 +109,10 @@
  */
 #define COUNT_VARARGS(...) _GET_NTH_ARG("ignored", ##__VA_ARGS__, 4, 3, 2, 1, 0)
 
-#if defined(__GNUC__) || defined(__clang__)
+/* As of C23, typeof is now included as part of the C standard. */
+#if defined(__GNUC__) || defined(__clang__) ||         \
+    (defined(__STDC__) && defined(__STDC_VERSION__) && \
+     (__STDC_VERSION__ >= 202000L)) /* C2x/C23 ?*/
 #define __HAVE_TYPEOF 1
 #endif