Index: Lib/compileall.py
===================================================================
--- Lib/compileall.py	(revisione 86613)
+++ Lib/compileall.py	(copia locale)
@@ -190,7 +190,7 @@
         args.rx = re.compile(args.rx)
 
     # if flist is provided then load it
-    compile_dests = [args.compile_dest]
+    compile_dests = [args.compile_dest] if args.compile_dest else []
     if args.flist:
         with open(args.flist) as f:
             files = f.read().split()