[clang-tidy] modernize-use-nullptr (#5715)

include/openthread/coap.h

@@ -826,6 +826,7 @@ static inline otError otCoapSendRequest(otInstance *          aInstance,
                                         otCoapResponseHandler aHandler,
                                         void *                aContext)
 {
+    // NOLINTNEXTLINE(modernize-use-nullptr)
     return otCoapSendRequestWithParameters(aInstance, aMessage, aMessageInfo, aHandler, aContext, NULL);
 }
 
@@ -909,6 +910,7 @@ otError otCoapSendResponseWithParameters(otInstance *              aInstance,
  */
 static inline otError otCoapSendResponse(otInstance *aInstance, otMessage *aMessage, const otMessageInfo *aMessageInfo)
 {
+    // NOLINTNEXTLINE(modernize-use-nullptr)
     return otCoapSendResponseWithParameters(aInstance, aMessage, aMessageInfo, NULL);
 }
 

include/openthread/instance.h

@@ -53,7 +53,7 @@ extern "C" {
  * @note This number versions both OpenThread platform and user APIs.
  *
  */
-#define OPENTHREAD_API_VERSION (38)
+#define OPENTHREAD_API_VERSION (39)
 
 /**
  * @addtogroup api-instance

script/make-pretty

@@ -117,6 +117,7 @@ readonly OT_CLANG_TIDY_BUILD_OPTS=(
 readonly OT_CLANG_TIDY_CHECKS="\
 -*,\
 modernize-use-bool-literals,\
+modernize-use-nullptr,\
 readability-make-member-function-const,\
 "
 

src/cli/cli.cpp

@@ -3701,7 +3701,7 @@ otError Interpreter::ProcessUnsecurePort(uint8_t aArgsLength, char *aArgs[])
 
         ports = otIp6GetUnsecurePorts(mInstance, &numPorts);
 
-        if (ports != NULL)
+        if (ports != nullptr)
         {
             for (uint8_t i = 0; i < numPorts; i++)
             {

src/lib/spinel/spinel_buffer.hpp

@@ -92,8 +92,8 @@ public:
          *
          */
         WritePosition(void)
-            : mPosition(0)
-            , mSegmentHead(0)
+            : mPosition(nullptr)
+            , mSegmentHead(nullptr)
         {
         }
 

tests/unit/test_platform.cpp

@@ -302,7 +302,7 @@ otRadioFrame *otPlatRadioGetTransmitBuffer(otInstance *aInstance)
     }
     else
     {
-        return (otRadioFrame *)0;
+        return nullptr;
     }
 }