Merge branch 'bugfix/gcc8_complation_errors' into 'master'

Warnings and errors detected by GCC8

See merge request idf/esp-idf!2703

components/app_trace/sys_view/esp32/SEGGER_RTT_esp32.c

@@ -20,7 +20,6 @@
 #include "rom/ets_sys.h"
 #include "esp_app_trace.h"
 
-#define LOG_LOCAL_LEVEL ESP_LOG_ERROR
 #include "esp_log.h"
 const static char *TAG = "segger_rtt";
 
@@ -125,7 +124,7 @@ unsigned SEGGER_RTT_WriteSkipNoLock(unsigned BufferIndex, const void* pBuffer, u
   uint8_t event_id = *pbuf;
 
   if (NumBytes > SYSVIEW_EVENTS_BUF_SZ) {
-      ESP_LOGE(TAG, "Too large event %d bytes!", NumBytes);
+      ESP_LOGE(TAG, "Too large event %u bytes!", NumBytes);
       return 0;
   }
   if (xPortGetCoreID()) { // dual core specific code

components/coap/component.mk

@@ -12,3 +12,5 @@ COMPONENT_SUBMODULES += libcoap
 
 libcoap/src/debug.o: CFLAGS += -Wno-write-strings
 libcoap/src/pdu.o: CFLAGS += -Wno-write-strings
+# Temporary suppress "fallthrough" warnings until they are fixed in libcoap repo
+libcoap/src/option.o: CFLAGS += -Wno-implicit-fallthrough

components/coap/port/coap_io_socket.c

@@ -374,8 +374,8 @@ coap_network_read(coap_endpoint_t *ep, coap_packet_t **packet) {
 	      }
 
 	      /* local interface for IPv4 */
-	      (*packet)->src.size = sizeof((*packet)->src.addr);
+	      (*packet)->src.size = sizeof((*packet)->src.addr.sa);
-	      memcpy(&(*packet)->src.addr.sa, &soc_srcipaddr, (*packet)->src.size);
+	      memcpy(&((*packet)->src.addr.sa), &soc_srcipaddr, (*packet)->src.size);
 
 	      if (len > coap_get_max_packetlength(*packet)) {
 	         /* FIXME: we might want to send back a response */

components/console/argtable3/argtable3.c

@@ -3071,6 +3071,7 @@ static int trex_charnode(TRex *exp,TRexBool isclass)
 					exp->_p++;
 					return node;
 				} //else default
+				/* falls through */
 			default:
 				t = *exp->_p; exp->_p++;
 				return trex_newnode(exp,t);

components/cxx/cxx_exception_stubs.cpp

@@ -13,12 +13,23 @@ extern "C" void __cxx_fatal_exception(void)
     abort();
 }
 
+extern "C" bool __cxx_fatal_exception_bool(void)
+{
+    __cxx_fatal_exception();
+    return false;
+}
+
 extern "C" void __cxx_fatal_exception_message(const char *msg)
 {
     printf("%s%s\n", FATAL_EXCEPTION, msg);
     abort();
 }
 
+extern "C" void __cxx_fatal_exception_message_va(const char *msg, ...)
+{
+    __cxx_fatal_exception_message(msg);
+}
+
 extern "C" void __cxx_fatal_exception_int(int i)
 {
     printf("%s (%d)\n", FATAL_EXCEPTION, i);
@@ -43,7 +54,7 @@ void std::__throw_length_error(const char*) __attribute__((alias("__cxx_fatal_ex
 
 void std::__throw_out_of_range(const char*) __attribute__((alias("__cxx_fatal_exception_message")));
 
-void std::__throw_out_of_range_fmt(const char*, ...) __attribute__((alias("__cxx_fatal_exception_message")));
+void std::__throw_out_of_range_fmt(const char*, ...) __attribute__((alias("__cxx_fatal_exception_message_va")));
 
 void std::__throw_runtime_error(const char*) __attribute__((alias("__cxx_fatal_exception_message")));
 
@@ -84,6 +95,6 @@ extern "C" void __cxa_rethrow(void) __attribute__((alias("__cxx_fatal_exception"
 extern "C" void __cxa_throw(void) __attribute__((alias("__cxx_fatal_exception")));
 extern "C" void __cxa_call_terminate(void) __attribute__((alias("__cxx_fatal_exception")));
 
-bool std::uncaught_exception() __attribute__((alias("__cxx_fatal_exception")));
+bool std::uncaught_exception() __attribute__((alias("__cxx_fatal_exception_bool")));
 
 #endif // CONFIG_CXX_EXCEPTIONS

components/driver/rtc_module.c

@@ -98,12 +98,12 @@ In ADC2, there're two locks used for different cases:
 adc2_spinlock should be acquired first, then adc2_wifi_lock or rtc_spinlock.
 */
 //prevent ADC2 being used by wifi and other tasks at the same time.
-static _lock_t adc2_wifi_lock = NULL;
+static _lock_t adc2_wifi_lock;
 //prevent ADC2 being used by tasks (regardless of WIFI)
 portMUX_TYPE adc2_spinlock = portMUX_INITIALIZER_UNLOCKED;
 
 //prevent ADC1 being used by I2S dma and other tasks at the same time.
-static _lock_t adc1_i2s_lock = NULL;
+static _lock_t adc1_i2s_lock;
 
 typedef struct {
     TimerHandle_t timer;

components/driver/sdio_slave.c

@@ -277,7 +277,7 @@ static inline uint8_t* sdio_ringbuf_offset_ptr(sdio_ringbuf_t *buf, sdio_ringbuf
 static esp_err_t sdio_ringbuf_send(sdio_ringbuf_t* buf, esp_err_t (*copy_callback)(uint8_t*, void*), void* arg, TickType_t wait)
 {
     portBASE_TYPE ret = xSemaphoreTake(buf->remain_cnt, wait);
-    if (ret != pdTRUE) return NULL;
+    if (ret != pdTRUE) return ESP_ERR_TIMEOUT;
 
     portENTER_CRITICAL(&buf->write_spinlock);
     uint8_t* get_ptr = sdio_ringbuf_offset_ptr(buf, ringbuf_write_ptr, buf->item_size);

components/esp32/clk.c

@@ -88,7 +88,7 @@ void esp_clk_init(void)
             break;
         default:
             freq_mhz = 80;
-            /* no break */
+            /* falls through */
         case 80:
             freq = RTC_CPU_FREQ_80M;
             break;

components/esp32/include/esp_wifi_crypto_types.h

@@ -607,7 +607,7 @@ typedef void (*esp_uuid_gen_mac_addr_t)(const unsigned char *mac_addr, unsigned
  * @brief free the message after finish DH
  * 
  */
-typedef void * (*esp_dh5_free_t)(void *ctx);
+typedef void (*esp_dh5_free_t)(void *ctx);
 
 /**
  * @brief Build WPS IE for (Re)Association Request

components/expat/component.mk

@@ -6,4 +6,5 @@ COMPONENT_ADD_INCLUDEDIRS := port/include include/expat
 COMPONENT_SRCDIRS := library port
 
 CFLAGS += -Wno-unused-function -DHAVE_EXPAT_CONFIG_H
-
+# Temporary suppress "fallthrough" warnings until they are fixed in expat repo
+CFLAGS += -Wno-implicit-fallthrough

components/expat/library/xmlparse.c

@@ -1554,6 +1554,7 @@ XML_Parse(XML_Parser parser, const char *s, int len, int isFinal)
       errorCode = XML_ERROR_NO_MEMORY;
       return XML_STATUS_ERROR;
     }
+    /* falls through */
   default:
     ps_parsing = XML_PARSING;
   }
@@ -1680,6 +1681,7 @@ XML_ParseBuffer(XML_Parser parser, int len, int isFinal)
       errorCode = XML_ERROR_NO_MEMORY;
       return XML_STATUS_ERROR;
     }
+    /* falls through */
   default:
     ps_parsing = XML_PARSING;
   }
@@ -4266,8 +4268,8 @@ doProlog(XML_Parser parser,
           return XML_ERROR_NO_MEMORY;
         declEntity->publicId = NULL;
       }
-      /* fall through */
 #endif /* XML_DTD */
+      /* falls through */
     case XML_ROLE_ENTITY_SYSTEM_ID:
       if (dtd->keepProcessing && declEntity) {
         declEntity->systemId = poolStoreString(&dtd->pool, enc,

components/expat/library/xmltok_impl.c

@@ -47,6 +47,7 @@
       *nextTokPtr = ptr; \
       return XML_TOK_INVALID; \
     } \
+    /* fall through */ \
   case BT_NMSTRT: \
   case BT_HEX: \
   case BT_DIGIT: \
@@ -75,6 +76,7 @@
       *nextTokPtr = ptr; \
       return XML_TOK_INVALID; \
     } \
+    /* fall through */ \
   case BT_NMSTRT: \
   case BT_HEX: \
     ptr += MINBPC(enc); \
@@ -575,7 +577,7 @@ PREFIX(scanAtts)(const ENCODING *enc, const char *ptr, const char *end,
           return XML_TOK_INVALID;
         }
       }
-    /* fall through */
+      /* fall through */
     case BT_EQUALS:
       {
         int open;
@@ -1403,6 +1405,7 @@ PREFIX(isPublicId)(const ENCODING *enc, const char *ptr, const char *end,
     case BT_NMSTRT:
       if (!(BYTE_TO_ASCII(enc, ptr) & ~0x7f))
         break;
+      /* fall through */
     default:
       switch (BYTE_TO_ASCII(enc, ptr)) {
       case 0x24: /* $ */

components/freertos/test/test_freertos_debug_functions.c

@@ -16,7 +16,7 @@
 #if (CONFIG_FREERTOS_QUEUE_REGISTRY_SIZE > 0)
 #define NO_OF_QUEUES_PER_CORE  ((int)((CONFIG_FREERTOS_QUEUE_REGISTRY_SIZE - 3)/portNUM_PROCESSORS))     //Save space for some preallocated tasks
 #define NO_OF_QUEUES_TOTAL    (NO_OF_QUEUES_PER_CORE * portNUM_PROCESSORS)
-#define QUEUE_NAME_MAX_LENGTH    10
+#define QUEUE_NAME_MAX_LENGTH    30
 
 static SemaphoreHandle_t start_sem[portNUM_PROCESSORS];
 static SemaphoreHandle_t done_sem = NULL;

components/libsodium/component.mk

@@ -86,3 +86,7 @@ CFLAGS +=  -DNATIVE_LITTLE_ENDIAN -DHAVE_WEAK_SYMBOLS -D__STDC_LIMIT_MACROS -D__
 
 # randombytes.c needs to pull in platform-specific implementation
 $(LSRC)/randombytes/randombytes.o: CFLAGS+=-DRANDOMBYTES_DEFAULT_IMPLEMENTATION
+
+# Temporary suppress "fallthrough" warnings until they are fixed in libsodium repo
+$(LSRC)/crypto_shorthash/siphash24/ref/shorthash_siphashx24_ref.o: CFLAGS += -Wno-implicit-fallthrough
+$(LSRC)/crypto_shorthash/siphash24/ref/shorthash_siphash24_ref.o: CFLAGS += -Wno-implicit-fallthrough

components/mbedtls/port/mbedtls_debug.c

@@ -34,12 +34,16 @@ void mbedtls_esp_enable_debug_log(mbedtls_ssl_config *conf, int threshold)
     switch(threshold) {
     case 1:
         level = ESP_LOG_WARN;
+        break;
     case 2:
         level = ESP_LOG_INFO;
+        break;
     case 3:
         level = ESP_LOG_DEBUG;
+        break;
     case 4:
         level = ESP_LOG_VERBOSE;
+        break;
     }
     esp_log_level_set(TAG, level);
 }
@@ -76,6 +80,7 @@ static void mbedtls_esp_debug(void *ctx, int level,
         break;
     case 3:
         ESP_LOGD(TAG, "%s:%d %s", file, line, str);
+        break;
     case 4:
         ESP_LOGV(TAG, "%s:%d %s", file, line, str);
         break;

components/nghttp/port/http_parser.c

@@ -1814,7 +1814,7 @@ reexecute:
 
             case 2:
               parser->upgrade = 1;
-
+              /* falls through */
             case 1:
               parser->flags |= F_SKIPBODY;
               break;
@@ -2374,7 +2374,7 @@ http_parser_parse_url(const char *buf, size_t buflen, int is_connect,
       case s_req_server_with_at:
         found_at = 1;
 
-      /* FALLTROUGH */
+        /* falls through */
       case s_req_server:
         uf = UF_HOST;
         break;

components/wpa_supplicant/src/wpa2/tls/x509v3.c

@@ -494,20 +494,28 @@ static char * x509_name_attr_str(enum x509_name_attr_type type)
 	switch (type) {
         case X509_NAME_ATTR_NOT_USED:
             strcpy(name_attr, "[N/A]");
+            break;
         case X509_NAME_ATTR_DC:
             strcpy(name_attr, "DC");
+            break;
         case X509_NAME_ATTR_CN:
             strcpy(name_attr, "CN");
+            break;
         case X509_NAME_ATTR_C:
             strcpy(name_attr, "C");
+            break;
         case X509_NAME_ATTR_L:
             strcpy(name_attr, "L");
+            break;
         case X509_NAME_ATTR_ST:
             strcpy(name_attr, "ST");
+            break;
         case X509_NAME_ATTR_O:
             strcpy(name_attr, "O");
+            break;
         case X509_NAME_ATTR_OU:
             strcpy(name_attr, "OU");
+            break;
         default :
             strcpy(name_attr, "?");
 	}