#4740: avoid creating unneeded homsets when coercing
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       Reporter:  mabshoff     |         Owner:  robertwb
           Type:  defect       |        Status:  needs_work
       Priority:  major        |     Milestone:  sage-5.11
      Component:  memleak      |    Resolution:
       Keywords:               |     Merged in:
        Authors:  Mike Hansen  |     Reviewers:
Report Upstream:  N/A          |   Work issues:
         Branch:               |  Dependencies:
       Stopgaps:               |
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Comment (by SimonKing):

 I just tried to use `trace("F.coerce(x)")` to see what happens. And now,
 it seems to me that `Hom()` is called as it should---but its cache is
 broken, for a reason that I don't understand.

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Ticket URL: <http://trac.sagemath.org/ticket/4740#comment:15>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica, 
and MATLAB

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