[MacPorts] #70341: g++ fails to compile when -libstd=libc++ is set

[MacPorts]

#70341: g++ fails to compile when -libstd=libc++ is set
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  Reporter:  mouse07410         |      Owner:  (none)
      Type:  defect             |     Status:  new
  Priority:  Normal             |  Milestone:
 Component:  ports              |    Version:
Resolution:                     |   Keywords:
      Port:  gcc12 gcc13 gcc14  |
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Comment (by cjones051073):

 b.t.w. If a future Xcode does fix things, the solution for older OSes
 might well be for someone to add a fallback implementation of the missing
 methods to our legacy-support package.

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Ticket URL: <https://trac.macports.org/ticket/70341#comment:27>
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