Fix MISRA violations (#1159)

Author: tony-josi-aws

source/FreeRTOS_DNS_Parser.c

@@ -330,6 +330,7 @@
                         #if ( ipconfigUSE_DNS_CACHE == 1 ) || ( ipconfigDNS_USE_CALLBACKS == 1 )
                             uxResult = DNS_ReadNameField( &xSet,
                                                           sizeof( xSet.pcName ) );
+                            ( void ) uxResult;
                         #endif
                     }
                 }
@@ -359,6 +360,7 @@
                         {
                             uxResult = DNS_ReadNameField( &xSet,
                                                           sizeof( xSet.pcName ) );
+                            ( void ) uxResult;
                         }
                         else
                     #endif /* ipconfigUSE_DNS_CACHE || ipconfigDNS_USE_CALLBACKS */

source/FreeRTOS_RA.c

@@ -489,7 +489,7 @@
                 if( pxEndPoint->xRAData.bits.bRouterReplied != pdFALSE_UNSIGNED )
                 {
                     /* Obtained configuration from a router. */
-                    uxNewReloadTime = pdMS_TO_TICKS( 1000U * pxEndPoint->xRAData.ulPreferredLifeTime );
+                    uxNewReloadTime = pdMS_TO_TICKS( ( 1000U * ( uint64_t ) pxEndPoint->xRAData.ulPreferredLifeTime ) );
                     pxEndPoint->xRAData.eRAState = eRAStatePreLease;
                     iptraceRA_SUCCEEDED( &( pxEndPoint->ipv6_settings.xIPAddress ) );
                     FreeRTOS_printf( ( "RA: succeeded, using IP address %pip Reload after %u seconds\n",

source/FreeRTOS_Sockets.c

@@ -2893,6 +2893,8 @@ BaseType_t FreeRTOS_setsockopt( Socket_t xSocket,
                         /* The type cast of the pointer expression "A" to
                          * type "B" removes const qualifier from the pointed to type. */
 
+                        ipconfigISO_STRICTNESS_VIOLATION_START;
+
                         /* MISRA Ref 11.8.1 [Function pointer and use of const pointer] */
                         /* More details at: https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/blob/main/MISRA.md#rule-118 */
 
@@ -2901,7 +2903,6 @@ BaseType_t FreeRTOS_setsockopt( Socket_t xSocket,
                         /* More details at: https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/blob/main/MISRA.md#rule-111 */
                         /* coverity[misra_c_2012_rule_11_8_violation] */
                         /* coverity[misra_c_2012_rule_11_1_violation] */
-                        ipconfigISO_STRICTNESS_VIOLATION_START;
                         pxSocket->pxUserWakeCallback = ( SocketWakeupCallback_t ) pvOptionValue;
                         ipconfigISO_STRICTNESS_VIOLATION_END;
                         xReturn = 0;

source/FreeRTOS_TCP_IP.c

@@ -277,6 +277,10 @@
     static BaseType_t vTCPRemoveTCPChild( const FreeRTOS_Socket_t * pxChildSocket )
     {
         BaseType_t xReturn = pdFALSE;
+
+        /* MISRA Ref 11.3.1 [Misaligned access] */
+        /* More details at: https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/blob/main/MISRA.md#rule-113 */
+        /* coverity[misra_c_2012_rule_11_3_violation] */
         const ListItem_t * pxEnd = ( ( const ListItem_t * ) &( xBoundTCPSocketsList.xListEnd ) );
 
         /* MISRA Ref 11.3.1 [Misaligned access] */

source/FreeRTOS_TCP_State_Handling_IPv4.c

@@ -200,7 +200,7 @@ FreeRTOS_Socket_t * prvHandleListen_IPV4( FreeRTOS_Socket_t * pxSocket,
                 /* Close the socket if it was newly created. */
                 if( xIsNewSocket == pdTRUE )
                 {
-                    vSocketClose( pxReturn );
+                    ( void ) vSocketClose( pxReturn );
                 }
 
                 pxReturn = NULL;

source/FreeRTOS_TCP_State_Handling_IPv6.c

@@ -200,7 +200,7 @@ FreeRTOS_Socket_t * prvHandleListen_IPV6( FreeRTOS_Socket_t * pxSocket,
                 /* Close the socket if it was newly created. */
                 if( xIsNewSocket == pdTRUE )
                 {
-                    vSocketClose( pxReturn );
+                    ( void ) vSocketClose( pxReturn );
                 }
 
                 pxReturn = NULL;