[MacPorts] #61751: Building protobuf3-cpp :info:build ./google/protobuf/map_field.h:332:37: error: constexpr constructor never produces a constant expression [-Winvalid-constexpr]

[MacPorts]

#61751: Building protobuf3-cpp :info:build ./google/protobuf/map_field.h:332:37:
error: constexpr constructor never produces a constant expression
[-Winvalid-constexpr]
----------------------------+------------------------
  Reporter:  dbl001         |      Owner:  ryandesign
      Type:  defect         |     Status:  closed
  Priority:  Normal         |  Milestone:
 Component:  ports          |    Version:  2.6.4
Resolution:  fixed          |   Keywords:
      Port:  protobuf3-cpp  |
----------------------------+------------------------

Comment (by chrstphrchvz):

 In [changeset:"88655518a01243af83b96b165157f37c9c8f0d80/macports-ports"
 88655518a01243af83b96b165157f37c9c8f0d80/macports-ports] (master):
 {{{
 #!ConfigurableCommitTicketReference repository="macports-ports"
 revision="88655518a01243af83b96b165157f37c9c8f0d80"
 protobuf-c: fix build on macOS 10.11 and earlier

 See: https://trac.macports.org/ticket/61751
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/61751#comment:5>
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