src/Pure/ML-Systems/smlnj.ML

 fun reraise exn = raise exn;
 
 use "ML-Systems/proper_int.ML";
 use "ML-Systems/overloading_smlnj.ML";
 use "ML-Systems/exn.ML";
+use "ML-Systems/unsynchronized.ML";
 use "ML-Systems/universal.ML";
 use "ML-Systems/thread_dummy.ML";
 use "ML-Systems/multithreading.ML";
 use "ML-Systems/timing.ML";
 use "ML-Systems/system_shell.ML";