[MacPorts] #59344: Error when compiling gcc9 with xcode11.1

[MacPorts]

#59344: Error when compiling gcc9 with xcode11.1
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  Reporter:  houzeaux  |      Owner:  (none)
      Type:  defect    |     Status:  new
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:
Resolution:            |   Keywords:  gcc9, xcode11.1
      Port:            |
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Changes (by houzeaux):

 * Attachment "main.log.tar.gz" added.

 log file obtained after trying to install gcc9

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Ticket URL: <https://trac.macports.org/ticket/59344>
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