Issue 7324: add a sanity check to regrtest argument parsing to

catch the case of an option with no handler.

Lib/test/regrtest.py

@@ -344,6 +344,10 @@ def main(tests=None, testdir=None, verbose=0, quiet=False,
             print   # Force a newline (just in case)
             print json.dumps(result)
             sys.exit(0)
+        else:
+            print >>sys.stderr, ("No handler for option {}.  Please "
+                "report this as a bug at http://bugs.python.org.").format(o)
+            sys.exit(1)
     if single and fromfile:
         usage(2, "-s and -f don't go together!")
     if use_mp and trace:

Misc/NEWS

@@ -1567,6 +1567,9 @@ Extension Modules
 Tests
 -----
 
+- Issue #7324: add a sanity check to regrtest argument parsing to
+  catch the case of an option with no handler.
+
 - Issue #7312: Add a -F flag to run the selected tests in a loop until
   a test fails.  Can be combined with -j.