use numeric_limits to avoid problems with underlying type change

project-chip · Aug 25, 2022 · b4c1951 · b4c1951
1 parent 036ef12
commit b4c1951
Showing 1 changed file with 2 additions and 1 deletion.
diff --git 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