[MacPorts] #55800: libvpx 1.7.0_0 build fails: error: assigning to '__m512i' (vector of 8 'long long' values) from incompatible type 'int'

[MacPorts]

#55800: libvpx 1.7.0_0 build fails: error: assigning to '__m512i' (vector of 8
'long long' values) from incompatible type 'int'
----------------------------+----------------------
  Reporter:  laughingtiger  |      Owner:  dbevans
      Type:  defect         |     Status:  assigned
  Priority:  Normal         |  Milestone:
 Component:  ports          |    Version:  2.4.2
Resolution:                 |   Keywords:
      Port:  libvpx         |
----------------------------+----------------------

Comment (by kencu):

 there is no failure if you build with a newer compiler there, Pete. It
 builds throgh perfectly fine with clang 3.9, as I said.

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Ticket URL: <https://trac.macports.org/ticket/55800#comment:7>
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