@@ -326,10 +326,11 @@
 
 	if (*typeEncoding == 'r')
 		typeEncoding++;
 
 	switch (*typeEncoding) {
+	case 'v':
 	case 'c':
 	case 'C':
 	case 'i':
 	case 'I':
 	case 's':
@@ -379,10 +380,12 @@
 	}
 
 	of_invocation_call(context);
 
 	switch (*typeEncoding) {
+		case 'v':
+			break;
 #define CASE_GPR(encoding, type)					   \
 		case encoding:						   \
 			{						   \
 				type tmp = (type)context->GPR[NUM_GPR_IN]; \
 				[invocation setReturnValue: &tmp];	   \