diff -r e93036747902 -r d60678a567a9 contrib/check-code.py
--- a/contrib/check-code.py	Tue Jun 23 22:30:33 2015 -0700
+++ b/contrib/check-code.py	Tue Jun 23 22:38:21 2015 -0700
@@ -288,6 +288,7 @@
     (r'\b__bool__\b', "__bool__ should be __nonzero__ in Python 2"),
     (r'os\.path\.join\(.*, *(""|\'\')\)',
      "use pathutil.normasprefix(path) instead of os.path.join(path, '')"),
+    (r'\s0[0-7]+\b', 'legacy octal syntax; use "0o" prefix instead of "0"'),
   ],
   # warnings
   [