[MacPorts] #61477: clang-9.0 fails to build on Big Sur macOS 11.0.1 Xcode 12.2

[MacPorts]

#61477: clang-9.0 fails to build on Big Sur macOS 11.0.1 Xcode 12.2
---------------------------------+--------------------
  Reporter:  jhoyt4              |      Owner:  kencu
      Type:  defect              |     Status:  closed
  Priority:  Normal              |  Milestone:
 Component:  ports               |    Version:
Resolution:  fixed               |   Keywords:
      Port:  clang-9.0 clang-10  |
---------------------------------+--------------------
Changes (by Chris Jones <jonesc@…>):

 * status:  assigned => closed
 * resolution:   => fixed


Comment:

 In [changeset:"de3b2c09de90fdb69c5bdc1ba14444d9e92c2eba/macports-ports"
 de3b2c09de90fdb69c5bdc1ba14444d9e92c2eba/macports-ports] (master):
 {{{
 #!ConfigurableCommitTicketReference repository="macports-ports"
 revision="de3b2c09de90fdb69c5bdc1ba14444d9e92c2eba"
 clang-{9.0,10}: Fix (x86_64) Darwin20 builds
 Closes: https://trac.macports.org/ticket/61477
 }}}

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Ticket URL: <https://trac.macports.org/ticket/61477#comment:29>
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