[MacPorts] #56326: rev-upgrade considers gcc as broken due to libstdc++

[MacPorts]

#56326: rev-upgrade considers gcc as broken due to libstdc++
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  Reporter:  raimue  |      Owner:  (none)
      Type:  defect  |     Status:  new
  Priority:  Normal  |  Milestone:
 Component:  base    |    Version:  2.4.99
Resolution:          |   Keywords:
      Port:          |
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Comment (by jmroot):

 Hmm. I can't think of a better way to work around this than having a list
 of ports to ignore when rev-upgrade adds this information.

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Ticket URL: <https://trac.macports.org/ticket/56326#comment:2>
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