diff -r 7266562c2bb3 Lib/trace.py
--- a/Lib/trace.py	Sat Oct 18 15:11:03 2014 -0700
+++ b/Lib/trace.py	Sun Oct 19 14:51:25 2014 +0700
@@ -773,7 +773,7 @@
     if report and not counts_file:
         _err_exit("--report requires a --file")
 
-    if no_report and len(prog_argv) == 0:
+    if (no_report or listfuncs) and len(prog_argv) == 0:
         _err_exit("missing name of file to run")
 
     # everything is ready