Index: tests/concurrency/waituntil/locks.cfa
===================================================================
--- tests/concurrency/waituntil/locks.cfa	(revision c26bea2aa0f87b4b070349c5801adc32fb0d4cf9)
+++ tests/concurrency/waituntil/locks.cfa	(revision 600478df9d45f2e1bedea30769269a6a71bbd7ac)
@@ -2,4 +2,5 @@
 #include <thread.hfa>
 #include <locks.hfa>
+#include <fstream.hfa>
 #include <mutex_stmt.hfa>