[MacPorts] #58776: libgcc9 fails to build with Xcode 11

[MacPorts]

#58776: libgcc9 fails to build with Xcode 11
-----------------------+--------------------------------
  Reporter:  vdoublie  |      Owner:  (none)
      Type:  defect    |     Status:  new
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:
Resolution:            |   Keywords:  segmentation fault
      Port:  libgcc9   |
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Changes (by vdoublie):

 * Attachment "main.log.tgz" added.


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Ticket URL: <https://trac.macports.org/ticket/58776>
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