Index: src/tests/preempt.c
===================================================================
--- src/tests/preempt.c	(revision 2afec66345a55139c8738d36411816676b2fe4d3)
+++ src/tests/preempt.c	(revision 3e239eaac48c6e798fe5758a0a41b89809897498)
@@ -20,7 +20,7 @@
 }
 
-void main(worker_t * this) {
+void main(worker_t & this) {
 	while(counter < 1000) {
-		if( (counter % 7) == this->value ) {
+		if( (counter % 7) == this.value ) {
 			int next = __atomic_add_fetch_4(&counter, 1, __ATOMIC_SEQ_CST);
 			if( (next % 100) == 0 ) printf("%d\n", next);