[MacPorts] #58882: Python37 configure script segfaults in generate-posix-vars on macOS 10.15

[MacPorts]

#58882: Python37 configure script segfaults in generate-posix-vars on macOS 10.15
-----------------------+----------------------
  Reporter:  vdoublie  |      Owner:  jmroot
      Type:  defect    |     Status:  assigned
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:
Resolution:            |   Keywords:  catalina
      Port:  python37  |
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Comment (by kencu):

 my guess is that this is another manifestation of

 <https://github.com/macports/macports-
 ports/commit/6e78e5c9495b4dc4e7e050fae2b41dd5b9accfdd>

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Ticket URL: <https://trac.macports.org/ticket/58882#comment:24>
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