#20435: factorisation of polynomials over integers has wrong parent
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       Reporter:  chapoton                    |        Owner:
           Type:  defect                      |       Status:  new
       Priority:  critical                    |    Milestone:  sage-7.2
      Component:  algebra                     |   Resolution:
       Keywords:  factor, polynomial, parent  |    Merged in:
        Authors:                              |    Reviewers:
Report Upstream:  N/A                         |  Work issues:
         Branch:                              |       Commit:
   Dependencies:                              |     Stopgaps:
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Comment (by chapoton):

 caused by the line
 {{{
 +                FF = [(f[0].change_ring(self._parent), f[1]) for f in F]
 }}}
 in #17840

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Ticket URL: <http://trac.sagemath.org/ticket/20435#comment:3>
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