[New-bugs-announce] [issue6899] Base.replace breaks tree
Martin v. Löwis
report at bugs.python.org
Sun Sep 13 10:50:41 CEST 2009
New submission from Martin v. Löwis <martin at v.loewis.de>:
In Base.replace, the method checks that self.parent is not None -
however, it (unfortunately), breaks this very property itself if self is
new, or self in new.
In particular, some fixers return node from transform if they don't want
to do anything. In that case, self.parent gets set to None, even though
new (which is self) is still connected to the tree.
This patch
a) short-cuts the case that self is new
b) arranges to set parent of the new nodes only after clearing parent of
self
----------
components: 2to3 (2.x to 3.0 conversion tool)
files: python.patch
keywords: patch
messages: 92563
nosy: loewis
severity: normal
status: open
title: Base.replace breaks tree
Added file: http://bugs.python.org/file14883/python.patch
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