Updated patch, which also takes care of not calling default __repr__ on
functions.
diff -u -r epydoc-3.0.1+dfsg.old/epydoc/markup/pyval_repr.py epydoc-3.0.1+dfsg/epydoc/markup/pyval_repr.py
--- epydoc-3.0.1+dfsg.old/epydoc/markup/pyval_repr.py	2015-08-16 18:57:38.152484836 +0000
+++ epydoc-3.0.1+dfsg/epydoc/markup/pyval_repr.py	2015-08-17 09:31:08.384223756 +0000
@@ -207,9 +207,18 @@
             self._colorize_re(pyval, state)
         else:
             try:
-                pyval_repr = repr(pyval)
-                if not isinstance(pyval_repr, (str, unicode)):
-                    pyval_repr = unicode(pyval_repr)
+                pyval_class = pyval.__class__
+                if hasattr(pyval, '__repr__') and \
+                        pyval_class.__repr__ is not object.__repr__ and \
+                        pyval_class.__repr__ is not types.FunctionType.__repr__:
+                    pyval_repr = repr(pyval)
+                    if not isinstance(pyval_repr, (str, unicode)):
+                        pyval_repr = unicode(pyval_repr)
+                else:
+                    # pyval has a default repr(), which would leak
+                    # a reference to the object
+                    pyval_repr = '<%s.%s object>' % (
+                            pyval_class.__module__, pyval_class.__name__)
                 pyval_repr_ok = True
             except KeyboardInterrupt:
                 raise

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