Merge branch 'fix/gcc16_unused_but_set_variable' into 'master'

Fix unused-but-set-variable warnings with GCC 16

See merge request espressif/esp-idf!50282

components/esp_psram/esp32/esp_psram_extram_cache.c

@@ -24,7 +24,6 @@
 void IRAM_ATTR esp_psram_extram_writeback_cache(void)
 {
     int x;
-    volatile int i = 0;
     volatile uint8_t *psram = (volatile uint8_t*)SOC_EXTRAM_DATA_LOW;
     int cache_was_disabled = 0;
 
@@ -51,7 +50,7 @@ void IRAM_ATTR esp_psram_extram_writeback_cache(void)
     the cache by just reading 64K worth of cache lines.
     */
     for (x = 0; x < 1024 * 64; x += 32) {
-        i += psram[x];
+        (void)psram[x];
     }
 #else
     /*
@@ -61,8 +60,8 @@ void IRAM_ATTR esp_psram_extram_writeback_cache(void)
     we ever support external RAM chips of 2M or smaller, this may need adjusting.
     */
     for (x = 0; x < 1024 * 64; x += 32) {
-        i += psram[x];
-        i += psram[x + (1024 * 1024 * 2)];
+        (void)psram[x];
+        (void)psram[x + (1024 * 1024 * 2)];
     }
 #endif
 

components/wpa_supplicant/src/eap_peer/eap_fast_pac.c

@@ -414,7 +414,8 @@ int eap_fast_load_pac(struct eap_sm *sm, struct eap_fast_pac **pac_root,
 {
 	struct eap_fast_read_ctx rc;
 	struct eap_fast_pac *pac = NULL;
-	int count = 0;
+	/* count is only consumed by debug logging */
+	int count __attribute__((unused)) = 0;
 	char *pos;
 	const char *err = NULL;
 
@@ -623,7 +624,9 @@ int eap_fast_save_pac(struct eap_sm *sm, struct eap_fast_pac *pac_root,
 		      const char *pac_file)
 {
 	struct eap_fast_pac *pac;
-	int ret, count = 0;
+	int ret;
+	/* count is only consumed by debug logging */
+	int count __attribute__((unused)) = 0;
 	char *buf, *pos;
 	size_t buf_len;
 
@@ -754,7 +757,9 @@ int eap_fast_load_pac_bin(struct eap_sm *sm, struct eap_fast_pac **pac_root,
 {
 	const struct wpa_config_blob *blob = NULL;
 	u8 *buf, *end, *pos;
-	size_t len, count = 0;
+	size_t len;
+	/* count is only consumed by debug logging */
+	size_t count __attribute__((unused)) = 0;
 	struct eap_fast_pac *pac, *prev;
 
 	*pac_root = NULL;
@@ -876,7 +881,9 @@ parse_fail:
 int eap_fast_save_pac_bin(struct eap_sm *sm, struct eap_fast_pac *pac_root,
 			  const char *pac_file)
 {
-	size_t len, count = 0;
+	size_t len;
+	/* count is only consumed by debug logging */
+	size_t count __attribute__((unused)) = 0;
 	struct eap_fast_pac *pac;
 	u8 *buf, *pos;
 

components/wpa_supplicant/src/rsn_supp/pmksa_cache.c

@@ -280,7 +280,6 @@ void pmksa_cache_flush(struct rsn_pmksa_cache *pmksa, void *network_ctx,
         const u8 *pmk, size_t pmk_len)
 {
     struct rsn_pmksa_cache_entry *entry, *prev = NULL, *tmp;
-    int removed = 0;
 
     entry = pmksa->pmksa;
     while (entry) {
@@ -298,14 +297,11 @@ void pmksa_cache_flush(struct rsn_pmksa_cache *pmksa, void *network_ctx,
             tmp = entry;
             entry = entry->next;
             pmksa_cache_free_entry(pmksa, tmp, PMKSA_FREE);
-            removed++;
         } else {
             prev = entry;
             entry = entry->next;
         }
     }
-    /*if (removed)
-      pmksa_cache_set_expiration(pmksa);*/
 }