[MacPorts] #64999: gnuregex fails to build

[MacPorts]

#64999: gnuregex fails to build
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 Reporter:  mouse07410  |      Owner:  (none)
     Type:  defect      |     Status:  new
 Priority:  Normal      |  Milestone:
Component:  ports       |    Version:
 Keywords:              |       Port:  gnuregex
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 macOS Monterey 12.3.1, Xcode-13.3.1 (and Macports clang-13).

 {{{gnuregex}}} port fails to build - see the log attached.

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Ticket URL: <https://trac.macports.org/ticket/64999>
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