Index: tests/concurrency/waituntil/locks.cfa
===================================================================
--- tests/concurrency/waituntil/locks.cfa	(revision c26bea2aa0f87b4b070349c5801adc32fb0d4cf9)
+++ tests/concurrency/waituntil/locks.cfa	(revision 2fd4cea308e6efe9323737cc2665e03050e6c8f8)
@@ -2,4 +2,5 @@
 #include <thread.hfa>
 #include <locks.hfa>
+#include <fstream.hfa>
 #include <mutex_stmt.hfa>