From 4ce70d4a35f1618f40747028bb91f668e143f989 Mon Sep 17 00:00:00 2001
From: Jeff Tung <100387939+jtung-apple@users.noreply.github.com>
Date: Wed, 24 Aug 2022 08:35:16 -0700
Subject: [PATCH] use numeric_limits to avoid problems with underlying type
 change

---
 src/system/SystemPacketBuffer.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/system/SystemPacketBuffer.cpp b/src/system/SystemPacketBuffer.cpp
index b171f072a63a46..c4904a8c968f5c 100644
--- a/src/system/SystemPacketBuffer.cpp
+++ b/src/system/SystemPacketBuffer.cpp
@@ -46,6 +46,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <utility>
+#include <limits>
 
 #if CHIP_SYSTEM_CONFIG_USE_LWIP
 #include <lwip/mem.h>
@@ -431,7 +432,7 @@ void PacketBuffer::AddRef()
     pbuf_ref(this);
 #else  // !CHIP_SYSTEM_CONFIG_USE_LWIP
     LOCK_BUF_POOL();
-    VerifyOrDieWithMsg(this->ref < UINT16_MAX, chipSystemLayer, "packet buffer refcount overflow");
+    VerifyOrDieWithMsg(this->ref < std::numeric_limits<decltype(this->ref)>::max(), chipSystemLayer, "packet buffer refcount overflow");
     ++this->ref;
     UNLOCK_BUF_POOL();
 #endif // !CHIP_SYSTEM_CONFIG_USE_LWIP