[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
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  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 colons):

 I'm able to build, install, and run from the 3.7.4 tarball successfully,
 with no modifications.

 I can't find anyone reporting this particular issue in Python's issue
 tracker. [https://bugs.python.org/issue38014 38295] isn't the same issue
 and I can't see anything that looks like this in their issue tracker.

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Ticket URL: <https://trac.macports.org/ticket/58882#comment:13>
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