[zope2-tracker] [Bug 434422] [NEW] Endless loop with Acquisition and ILocation in Products.Five.component findSite

[gweis]

Public bug reported:

Prodcuts.Five.component findSite using the ILocation API or if not
available the Acquisition chain to find a parent object. If an object
Acquisition wrapped object implements the ILocation API the parent
retrieved from obj.__parent__ is aq-wrapped in the context of obj which
leads to an endless loop in finding an ISite.

The attached patches contain a doc-test to demonstrate the behaviour and
a suggested fix. The fix just checks if the object is aq-wrapped before
accessing the __parent__ attribute. This basically means, Acquisition is
given preference to ILocation.

The patch against current Zope 2.11 development branch, and most likely
applies to 2.10 too. I am not sure about 2.12 because there have been
some changes to the Acquisition module.

cheers

Gerhard

** Affects: zope2
     Importance: Undecided
         Status: New

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Endless loop with Acquisition and ILocation in Products.Five.component findSite
https://bugs.launchpad.net/bugs/434422
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