Index: tests/concurrent/park/contention.cfa
===================================================================
--- tests/concurrent/park/contention.cfa	(revision 3381ed7a703d0c964d6e94bffab7c58f0cdf0d17)
+++ tests/concurrent/park/contention.cfa	(revision b52abe09e566fb9c0f5bb6ff0da4ce67bdd511bb)
@@ -21,9 +21,9 @@
 		if(blocked[idx]) {
 			Thread * thrd = __atomic_exchange_n(&blocked[idx], 0p, __ATOMIC_SEQ_CST);
-			unpark( *thrd );
+			unpark( *thrd __cfaabi_dbg_ctx2 );
 		} else {
 			Thread * thrd = __atomic_exchange_n(&blocked[idx], &this, __ATOMIC_SEQ_CST);
-			unpark( *thrd);
-			park();
+			unpark( *thrd __cfaabi_dbg_ctx2 );
+			park( __cfaabi_dbg_ctx );
 		}
 	}
@@ -41,5 +41,5 @@
 			int idx = myrand() % blocked_size;
 			Thread * thrd = __atomic_exchange_n(&blocked[idx], 0p, __ATOMIC_SEQ_CST);
-			unpark( *thrd );
+			unpark( *thrd __cfaabi_dbg_ctx2 );
 			yield( myrand() % 20 );
 		}