DNS: Cast void* to intptr_t in nsapi_dns.cpp

This is for portability reasons. If this code was compiled to a 64-bit architecture, then the cast from void* to int would lose precision.

Author: michalpasztamobica

features/netsocket/nsapi_dns.cpp

@@ -23,6 +23,7 @@
 #include <string.h>
 #include <stdlib.h>
 #include <stdio.h>
+#include <stdint.h>
 #include "mbed_shared_queues.h"
 #include "events/EventQueue.h"
 #include "OnboardNetworkStack.h"
@@ -63,7 +64,7 @@ enum dns_state {
 };
 
 struct DNS_QUERY {
-    int unique_id;
+    intptr_t unique_id;
     nsapi_error_t status;
     NetworkStack *stack;
     char *host;
@@ -94,7 +95,7 @@ static void nsapi_dns_cache_reset();
 static nsapi_error_t nsapi_dns_get_server_addr(NetworkStack *stack, uint8_t *index, uint8_t *total_attempts, uint8_t *send_success, SocketAddress *dns_addr, const char *interface_name);
 
 static void nsapi_dns_query_async_create(void *ptr);
-static nsapi_error_t nsapi_dns_query_async_delete(int unique_id);
+static nsapi_error_t nsapi_dns_query_async_delete(intptr_t unique_id);
 static void nsapi_dns_query_async_send(void *ptr);
 static void nsapi_dns_query_async_timeout(void);
 static void nsapi_dns_query_async_resp(DNS_QUERY *query, nsapi_error_t status, SocketAddress *address);
@@ -122,7 +123,7 @@ static SingletonPtr<PlatformMutex> dns_cache_mutex;
 #endif
 
 static uint16_t dns_message_id = 1;
-static int dns_unique_id = 1;
+static intptr_t dns_unique_id = 1;
 static DNS_QUERY *dns_query_queue[DNS_QUERY_QUEUE_SIZE];
 // Protects from several threads running asynchronous DNS
 static SingletonPtr<PlatformMutex> dns_mutex;
@@ -765,7 +766,7 @@ nsapi_value_or_error_t nsapi_dns_query_multiple_async(NetworkStack *stack, const
 
 static void nsapi_dns_query_async_initiate_next(void)
 {
-    int id = INT32_MAX;
+    intptr_t id = INTPTR_MAX;
     DNS_QUERY *query = NULL;
 
     // Trigger next query to start, find one that has been on queue longest
@@ -842,7 +843,7 @@ static void nsapi_dns_query_async_timeout(void)
     dns_mutex->unlock();
 }
 
-nsapi_error_t nsapi_dns_query_async_cancel(int id)
+nsapi_error_t nsapi_dns_query_async_cancel(intptr_t id)
 {
     dns_mutex->lock();
 
@@ -874,7 +875,7 @@ static void nsapi_dns_query_async_create(void *ptr)
 {
     dns_mutex->lock();
 
-    int unique_id = reinterpret_cast<int>(ptr);
+    intptr_t unique_id = reinterpret_cast<intptr_t>(ptr);
 
     DNS_QUERY *query = NULL;
 
@@ -940,7 +941,7 @@ static void nsapi_dns_query_async_create(void *ptr)
 
 }
 
-static nsapi_error_t nsapi_dns_query_async_delete(int unique_id)
+static nsapi_error_t nsapi_dns_query_async_delete(intptr_t unique_id)
 {
     int index = -1;
     DNS_QUERY *query = NULL;
@@ -1000,7 +1001,7 @@ static void nsapi_dns_query_async_send(void *ptr)
 {
     dns_mutex->lock();
 
-    int unique_id = reinterpret_cast<int>(ptr);
+    intptr_t unique_id = reinterpret_cast<intptr_t>(ptr);
 
     DNS_QUERY *query = NULL;
 
@@ -1162,7 +1163,7 @@ static void nsapi_dns_query_async_response(void *ptr)
 {
     dns_mutex->lock();
 
-    int unique_id = reinterpret_cast<int>(ptr);
+    intptr_t unique_id = reinterpret_cast<intptr_t>(ptr);
 
     DNS_QUERY *query = NULL;