Index: Lib/test/regrtest.py
===================================================================
--- Lib/test/regrtest.py	(revision 73446)
+++ Lib/test/regrtest.py	(working copy)
@@ -386,6 +386,7 @@
         import trace
         tracer = trace.Trace(ignoredirs=[sys.prefix, sys.exec_prefix],
                              trace=False, count=True)
+    print "Testing with flags:", sys.flags
     test_times = []
     test_support.use_resources = use_resources
     save_modules = sys.modules.keys()