[MacPorts] #63111: llvm-12: base generates warnings about -Wimplicit-function-declaration (was: llvm-12 doesn't build: -Wimplicit-function-declaration disabled)

[MacPorts]

#63111: llvm-12: base generates warnings about -Wimplicit-function-declaration
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  Reporter:  ceandrade  |      Owner:  (none)
      Type:  defect     |     Status:  new
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:  2.7.1
Resolution:             |   Keywords:
      Port:             |
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Ticket URL: <https://trac.macports.org/ticket/63111#comment:3>
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