[MacPorts] #57231: clang-3.7: Build failure on macOS Mojave

[MacPorts]

#57231: clang-3.7: Build failure on macOS Mojave
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  Reporter:  ryandesign  |      Owner:  jeremyhu
      Type:  defect      |     Status:  assigned
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:
Resolution:              |   Keywords:  mojave
      Port:  clang-3.7   |
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Comment (by kencu):

 Yes. I can take care of that.

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Ticket URL: <https://trac.macports.org/ticket/57231#comment:1>
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