[MacPorts] #59319: gcc8 fails to build (macOS 10.15 Catalina)

[MacPorts]

#59319: gcc8 fails to build (macOS 10.15 Catalina)
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  Reporter:  smeingast  |      Owner:  (none)
      Type:  defect     |     Status:  new
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:  2.6.1
Resolution:             |   Keywords:
      Port:  gcc8       |
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Changes (by smeingast):

 * Attachment "main.log.zip" added.

 main.log zipped

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Ticket URL: <https://trac.macports.org/ticket/59319>
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