[MacPorts] #67416: libgcc12 @12.3.0: build failure on Monterey

[MacPorts]

#67416: libgcc12 @12.3.0: build failure on Monterey
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  Reporter:  hululud  |      Owner:  mascguy
      Type:  defect   |     Status:  reopened
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:  2.8.1
Resolution:           |   Keywords:  monterey
      Port:  gcc12    |
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Comment (by mascguy):

 Update: I've tested on my macOS 12 VM, with Xcode 13.3 and 13.4.1. And
 `libgcc12` builds successfully with both.

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Ticket URL: <https://trac.macports.org/ticket/67416#comment:14>
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