Issue #3299: replace PyObject_DEL() by Py_DECREF() in _sre module to fix a
crash in pydebug mode.
diff --git a/Lib/test/test_re.py b/Lib/test/test_re.py
index 2107b3a..d2f7f6e 100644
--- a/Lib/test/test_re.py
+++ b/Lib/test/test_re.py
@@ -727,6 +727,7 @@
         long_overflow = 2**128
         self.assertRaises(TypeError, re.finditer, "a", {})
         self.assertRaises(OverflowError, _sre.compile, "abc", 0, [long_overflow])
+        self.assertRaises(TypeError, _sre.compile, {}, 0, [])
 
 def run_re_tests():
     from test.re_tests import benchmarks, tests, SUCCEED, FAIL, SYNTAX_ERROR