@hathach is uncomfortable with attributes on function parameters

Author: henrygab

cores/arduino/SERCOM.h

@@ -248,7 +248,7 @@ class SERCOM
 		uint32_t getFreqRef(void) { return freqRef; };
 #else
 		// The equivalent SAMD21 dummy functions...
-		void setClockSource(__attribute__((unused)) int8_t idx, __attribute__((unused)) SercomClockSource src, __attribute__((unused)) bool core) { };
+		void setClockSource(int8_t idx, SercomClockSource src, bool core) { (void)idx; (void)src; (void)core };
 		SercomClockSource getClockSource(void) { return SERCOM_CLOCK_SOURCE_FCPU; };
 		uint32_t getFreqRef(void) { return F_CPU; };
 #endif

libraries/USBHost/examples/USB_desc/USB_desc.ino

@@ -159,8 +159,9 @@ byte getdevdescr( byte addr, byte &num_conf )
   return( 0 );
 }
 
-void printhubdescr(uint8_t *descrptr, __attribute__((unused)) uint8_t addr)
+void printhubdescr(uint8_t *descrptr, uint8_t addr)
 {
+    (void)addr;
     HubDescriptor  *pHub = (HubDescriptor*) descrptr;
     uint8_t        len = *((uint8_t*)descrptr);