From 4b0f2e5edcebd8110202f6fb867ca7a3f244a4e4 Mon Sep 17 00:00:00 2001
From: Thiago Macieira <thiago.macieira@intel.com>
Date: Thu, 27 Nov 2025 18:27:27 -0800
Subject: [PATCH] compilersupport: add support for C23's `nullptr`

It has the same semantics as C++11's `nullptr`.

Signed-off-by: Thiago Macieira <thiago.macieira@intel.com>
---
 src/compilersupport_p.h | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/compilersupport_p.h b/src/compilersupport_p.h
index 92517997..4baf9bd5 100644
--- a/src/compilersupport_p.h
+++ b/src/compilersupport_p.h
@@ -202,10 +202,14 @@
 
 #ifdef __cplusplus
 #  define CONST_CAST(t, v)  const_cast<t>(v)
-#  define CBOR_NULLPTR nullptr
 #else
 /* C-style const_cast without triggering a warning with -Wcast-qual */
 #  define CONST_CAST(t, v)  (t)(uintptr_t)(v)
+#endif
+
+#if defined(__cplusplus) || __STDC_VERSION__ >= 202311
+#  define CBOR_NULLPTR nullptr
+#else
 #  define CBOR_NULLPTR NULL
 #endif