tree db65cc51c7685ef3cdcb74f97f2d52366bc29588
parent dbfe5e85076aaced56313fbc61642426619e4913
author Guido van Rossum <guido@python.org> 998080356 +0000
committer Guido van Rossum <guido@python.org> 998080356 +0000
HG:extra convert_revision:svn%3A6015fed2-1504-0410-9fe1-9d1591cc4771/python/branches/legacy-trunk%4022557

Weak reference support, closing SF bug #451773.

Classes that don't use __slots__ have a __weakref__ member added in
the same way as __dict__ is added (i.e. only if the base didn't
already have one).  Classes using __slots__ can enable weak
referenceability by adding '__weakref__' to the __slots__ list.

Renamed the __weaklistoffset__ class member to __weakrefoffset__ --
it's not always a list, it seems.  (Is tp_weaklistoffset a historical
misnomer, or do I misunderstand this?)